20890548

素因数分解:

$2^2\times 3^4\times 7^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1$

素因数の和:235

約数の個数: 120

約数和(自身を含む): 63857024

約数和(自身を除く): 42966476

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 61, 63, 81, 84, 108, 122, 126, 151, 162, 183, 189, 244, 252, 302, 324, 366, 378, 427, 453, 549, 567, 604, 732, 756, 854, 906, 1057, 1098, 1134, 1281, 1359, 1647, 1708, 1812, 2114, 2196, 2268, 2562, 2718, 3171, 3294, 3843, 4077, 4228, 4941, 5124, 5436, 6342, 6588, 7686, 8154, 9211, 9513, 9882, 11529, 12231, 12684, 15372, 16308, 18422, 19026, 19764, 23058, 24462, 27633, 28539, 34587, 36844, 38052, 46116, 48924, 55266, 57078, 64477, 69174, 82899, 85617, 110532, 114156, 128954, 138348, 165798, 171234, 193431, 248697, 257908, 331596, 342468, 386862, 497394, 580293, 746091, 773724, 994788, 1160586, 1492182, 1740879, 2321172, 2984364, 3481758, 5222637, 6963516, 10445274, 20890548]

約数ペア:

[(1, 20890548), (2, 10445274), (3, 6963516), (4, 5222637), (6, 3481758), (7, 2984364), (9, 2321172), (12, 1740879), (14, 1492182), (18, 1160586), (21, 994788), (27, 773724), (28, 746091), (36, 580293), (42, 497394), (54, 386862), (61, 342468), (63, 331596), (81, 257908), (84, 248697), (108, 193431), (122, 171234), (126, 165798), (151, 138348), (162, 128954), (183, 114156), (189, 110532), (244, 85617), (252, 82899), (302, 69174), (324, 64477), (366, 57078), (378, 55266), (427, 48924), (453, 46116), (549, 38052), (567, 36844), (604, 34587), (732, 28539), (756, 27633), (854, 24462), (906, 23058), (1057, 19764), (1098, 19026), (1134, 18422), (1281, 16308), (1359, 15372), (1647, 12684), (1708, 12231), (1812, 11529), (2114, 9882), (2196, 9513), (2268, 9211), (2562, 8154), (2718, 7686), (3171, 6588), (3294, 6342), (3843, 5436), (4077, 5124), (4228, 4941)]