81975460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{331}}^1$

素因数の和:437

約数の個数: 96

約数和(自身を含む): 207486720

約数和(自身を除く): 125511260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 61, 70, 116, 122, 140, 145, 203, 244, 290, 305, 331, 406, 427, 580, 610, 662, 812, 854, 1015, 1220, 1324, 1655, 1708, 1769, 2030, 2135, 2317, 3310, 3538, 4060, 4270, 4634, 6620, 7076, 8540, 8845, 9268, 9599, 11585, 12383, 17690, 19198, 20191, 23170, 24766, 35380, 38396, 40382, 46340, 47995, 49532, 61915, 67193, 80764, 95990, 100955, 123830, 134386, 141337, 191980, 201910, 247660, 268772, 282674, 335965, 403820, 565348, 585539, 671930, 706685, 1171078, 1343860, 1413370, 2342156, 2826740, 2927695, 4098773, 5855390, 8197546, 11710780, 16395092, 20493865, 40987730, 81975460]

約数ペア:

[(1, 81975460), (2, 40987730), (4, 20493865), (5, 16395092), (7, 11710780), (10, 8197546), (14, 5855390), (20, 4098773), (28, 2927695), (29, 2826740), (35, 2342156), (58, 1413370), (61, 1343860), (70, 1171078), (116, 706685), (122, 671930), (140, 585539), (145, 565348), (203, 403820), (244, 335965), (290, 282674), (305, 268772), (331, 247660), (406, 201910), (427, 191980), (580, 141337), (610, 134386), (662, 123830), (812, 100955), (854, 95990), (1015, 80764), (1220, 67193), (1324, 61915), (1655, 49532), (1708, 47995), (1769, 46340), (2030, 40382), (2135, 38396), (2317, 35380), (3310, 24766), (3538, 23170), (4060, 20191), (4270, 19198), (4634, 17690), (6620, 12383), (7076, 11585), (8540, 9599), (8845, 9268)]