28638540

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{191}}^1$

素因数の和:237

約数の個数: 216

約数和(自身を含む): 107557632

約数和(自身を除く): 78919092

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 17, 18, 20, 21, 28, 30, 34, 35, 36, 42, 45, 49, 51, 60, 63, 68, 70, 84, 85, 90, 98, 102, 105, 119, 126, 140, 147, 153, 170, 180, 191, 196, 204, 210, 238, 245, 252, 255, 294, 306, 315, 340, 357, 382, 420, 441, 476, 490, 510, 573, 588, 595, 612, 630, 714, 735, 764, 765, 833, 882, 955, 980, 1020, 1071, 1146, 1190, 1260, 1337, 1428, 1470, 1530, 1666, 1719, 1764, 1785, 1910, 2142, 2205, 2292, 2380, 2499, 2674, 2865, 2940, 3060, 3247, 3332, 3438, 3570, 3820, 4011, 4165, 4284, 4410, 4998, 5348, 5355, 5730, 6494, 6685, 6876, 7140, 7497, 8022, 8330, 8595, 8820, 9359, 9741, 9996, 10710, 11460, 12033, 12495, 12988, 13370, 14994, 16044, 16235, 16660, 17190, 18718, 19482, 20055, 21420, 22729, 24066, 24990, 26740, 28077, 29223, 29988, 32470, 34380, 37436, 37485, 38964, 40110, 45458, 46795, 48132, 48705, 49980, 56154, 58446, 60165, 64940, 68187, 74970, 80220, 84231, 90916, 93590, 97410, 112308, 113645, 116892, 120330, 136374, 140385, 146115, 149940, 159103, 168462, 187180, 194820, 204561, 227290, 240660, 272748, 280770, 292230, 318206, 336924, 340935, 409122, 421155, 454580, 477309, 561540, 584460, 636412, 681870, 795515, 818244, 842310, 954618, 1022805, 1363740, 1431927, 1591030, 1684620, 1909236, 2045610, 2386545, 2863854, 3182060, 4091220, 4773090, 5727708, 7159635, 9546180, 14319270, 28638540]

約数ペア:

[(1, 28638540), (2, 14319270), (3, 9546180), (4, 7159635), (5, 5727708), (6, 4773090), (7, 4091220), (9, 3182060), (10, 2863854), (12, 2386545), (14, 2045610), (15, 1909236), (17, 1684620), (18, 1591030), (20, 1431927), (21, 1363740), (28, 1022805), (30, 954618), (34, 842310), (35, 818244), (36, 795515), (42, 681870), (45, 636412), (49, 584460), (51, 561540), (60, 477309), (63, 454580), (68, 421155), (70, 409122), (84, 340935), (85, 336924), (90, 318206), (98, 292230), (102, 280770), (105, 272748), (119, 240660), (126, 227290), (140, 204561), (147, 194820), (153, 187180), (170, 168462), (180, 159103), (191, 149940), (196, 146115), (204, 140385), (210, 136374), (238, 120330), (245, 116892), (252, 113645), (255, 112308), (294, 97410), (306, 93590), (315, 90916), (340, 84231), (357, 80220), (382, 74970), (420, 68187), (441, 64940), (476, 60165), (490, 58446), (510, 56154), (573, 49980), (588, 48705), (595, 48132), (612, 46795), (630, 45458), (714, 40110), (735, 38964), (764, 37485), (765, 37436), (833, 34380), (882, 32470), (955, 29988), (980, 29223), (1020, 28077), (1071, 26740), (1146, 24990), (1190, 24066), (1260, 22729), (1337, 21420), (1428, 20055), (1470, 19482), (1530, 18718), (1666, 17190), (1719, 16660), (1764, 16235), (1785, 16044), (1910, 14994), (2142, 13370), (2205, 12988), (2292, 12495), (2380, 12033), (2499, 11460), (2674, 10710), (2865, 9996), (2940, 9741), (3060, 9359), (3247, 8820), (3332, 8595), (3438, 8330), (3570, 8022), (3820, 7497), (4011, 7140), (4165, 6876), (4284, 6685), (4410, 6494), (4998, 5730), (5348, 5355)]