21941220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{439}}^1$

素因数の和:482

約数の個数: 144

約数和(自身を含む): 75841920

約数和(自身を除く): 53900700

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 17, 20, 21, 28, 30, 34, 35, 42, 49, 51, 60, 68, 70, 84, 85, 98, 102, 105, 119, 140, 147, 170, 196, 204, 210, 238, 245, 255, 294, 340, 357, 420, 439, 476, 490, 510, 588, 595, 714, 735, 833, 878, 980, 1020, 1190, 1317, 1428, 1470, 1666, 1756, 1785, 2195, 2380, 2499, 2634, 2940, 3073, 3332, 3570, 4165, 4390, 4998, 5268, 6146, 6585, 7140, 7463, 8330, 8780, 9219, 9996, 12292, 12495, 13170, 14926, 15365, 16660, 18438, 21511, 22389, 24990, 26340, 29852, 30730, 36876, 37315, 43022, 44778, 46095, 49980, 52241, 61460, 64533, 74630, 86044, 89556, 92190, 104482, 107555, 111945, 129066, 149260, 156723, 184380, 208964, 215110, 223890, 258132, 261205, 313446, 322665, 365687, 430220, 447780, 522410, 626892, 645330, 731374, 783615, 1044820, 1097061, 1290660, 1462748, 1567230, 1828435, 2194122, 3134460, 3656870, 4388244, 5485305, 7313740, 10970610, 21941220]

約数ペア:

[(1, 21941220), (2, 10970610), (3, 7313740), (4, 5485305), (5, 4388244), (6, 3656870), (7, 3134460), (10, 2194122), (12, 1828435), (14, 1567230), (15, 1462748), (17, 1290660), (20, 1097061), (21, 1044820), (28, 783615), (30, 731374), (34, 645330), (35, 626892), (42, 522410), (49, 447780), (51, 430220), (60, 365687), (68, 322665), (70, 313446), (84, 261205), (85, 258132), (98, 223890), (102, 215110), (105, 208964), (119, 184380), (140, 156723), (147, 149260), (170, 129066), (196, 111945), (204, 107555), (210, 104482), (238, 92190), (245, 89556), (255, 86044), (294, 74630), (340, 64533), (357, 61460), (420, 52241), (439, 49980), (476, 46095), (490, 44778), (510, 43022), (588, 37315), (595, 36876), (714, 30730), (735, 29852), (833, 26340), (878, 24990), (980, 22389), (1020, 21511), (1190, 18438), (1317, 16660), (1428, 15365), (1470, 14926), (1666, 13170), (1756, 12495), (1785, 12292), (2195, 9996), (2380, 9219), (2499, 8780), (2634, 8330), (2940, 7463), (3073, 7140), (3332, 6585), (3570, 6146), (4165, 5268), (4390, 4998)]