21747180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{569}}^1$

素因数の和:608

約数の個数: 144

約数和(自身を含む): 76416480

約数和(自身を除く): 54669300

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 49, 52, 60, 65, 70, 78, 84, 91, 98, 105, 130, 140, 147, 156, 182, 195, 196, 210, 245, 260, 273, 294, 364, 390, 420, 455, 490, 546, 569, 588, 637, 735, 780, 910, 980, 1092, 1138, 1274, 1365, 1470, 1707, 1820, 1911, 2276, 2548, 2730, 2845, 2940, 3185, 3414, 3822, 3983, 5460, 5690, 6370, 6828, 7397, 7644, 7966, 8535, 9555, 11380, 11949, 12740, 14794, 15932, 17070, 19110, 19915, 22191, 23898, 27881, 29588, 34140, 36985, 38220, 39830, 44382, 47796, 51779, 55762, 59745, 73970, 79660, 83643, 88764, 103558, 110955, 111524, 119490, 139405, 147940, 155337, 167286, 207116, 221910, 238980, 258895, 278810, 310674, 334572, 362453, 418215, 443820, 517790, 557620, 621348, 724906, 776685, 836430, 1035580, 1087359, 1449812, 1553370, 1672860, 1812265, 2174718, 3106740, 3624530, 4349436, 5436795, 7249060, 10873590, 21747180]

約数ペア:

[(1, 21747180), (2, 10873590), (3, 7249060), (4, 5436795), (5, 4349436), (6, 3624530), (7, 3106740), (10, 2174718), (12, 1812265), (13, 1672860), (14, 1553370), (15, 1449812), (20, 1087359), (21, 1035580), (26, 836430), (28, 776685), (30, 724906), (35, 621348), (39, 557620), (42, 517790), (49, 443820), (52, 418215), (60, 362453), (65, 334572), (70, 310674), (78, 278810), (84, 258895), (91, 238980), (98, 221910), (105, 207116), (130, 167286), (140, 155337), (147, 147940), (156, 139405), (182, 119490), (195, 111524), (196, 110955), (210, 103558), (245, 88764), (260, 83643), (273, 79660), (294, 73970), (364, 59745), (390, 55762), (420, 51779), (455, 47796), (490, 44382), (546, 39830), (569, 38220), (588, 36985), (637, 34140), (735, 29588), (780, 27881), (910, 23898), (980, 22191), (1092, 19915), (1138, 19110), (1274, 17070), (1365, 15932), (1470, 14794), (1707, 12740), (1820, 11949), (1911, 11380), (2276, 9555), (2548, 8535), (2730, 7966), (2845, 7644), (2940, 7397), (3185, 6828), (3414, 6370), (3822, 5690), (3983, 5460)]