661854820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{227}}^1\times {\mathrm{457}}^1$

素因数の和:733

約数の個数: 96

約数和(自身を含む): 1578890880

約数和(自身を除く): 917036060

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 44, 55, 58, 110, 116, 145, 220, 227, 290, 319, 454, 457, 580, 638, 908, 914, 1135, 1276, 1595, 1828, 2270, 2285, 2497, 3190, 4540, 4570, 4994, 5027, 6380, 6583, 9140, 9988, 10054, 12485, 13166, 13253, 20108, 24970, 25135, 26332, 26506, 32915, 49940, 50270, 53012, 65830, 66265, 72413, 100540, 103739, 131660, 132530, 144826, 145783, 207478, 265060, 289652, 291566, 362065, 414956, 518695, 583132, 724130, 728915, 1037390, 1141129, 1448260, 1457830, 2074780, 2282258, 2915660, 3008431, 4564516, 5705645, 6016862, 11411290, 12033724, 15042155, 22822580, 30084310, 33092741, 60168620, 66185482, 132370964, 165463705, 330927410, 661854820]

約数ペア:

[(1, 661854820), (2, 330927410), (4, 165463705), (5, 132370964), (10, 66185482), (11, 60168620), (20, 33092741), (22, 30084310), (29, 22822580), (44, 15042155), (55, 12033724), (58, 11411290), (110, 6016862), (116, 5705645), (145, 4564516), (220, 3008431), (227, 2915660), (290, 2282258), (319, 2074780), (454, 1457830), (457, 1448260), (580, 1141129), (638, 1037390), (908, 728915), (914, 724130), (1135, 583132), (1276, 518695), (1595, 414956), (1828, 362065), (2270, 291566), (2285, 289652), (2497, 265060), (3190, 207478), (4540, 145783), (4570, 144826), (4994, 132530), (5027, 131660), (6380, 103739), (6583, 100540), (9140, 72413), (9988, 66265), (10054, 65830), (12485, 53012), (13166, 50270), (13253, 49940), (20108, 32915), (24970, 26506), (25135, 26332)]