661058020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{653}}^1\times {\mathrm{1033}}^1$

素因数の和:1709

約数の個数: 72

約数和(自身を含む): 1618908984

約数和(自身を除く): 957850964

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 653, 980, 1033, 1306, 2066, 2612, 3265, 4132, 4571, 5165, 6530, 7231, 9142, 10330, 13060, 14462, 18284, 20660, 22855, 28924, 31997, 36155, 45710, 50617, 63994, 72310, 91420, 101234, 127988, 144620, 159985, 202468, 253085, 319970, 506170, 639940, 674549, 1012340, 1349098, 2698196, 3372745, 4721843, 6745490, 9443686, 13490980, 18887372, 23609215, 33052901, 47218430, 66105802, 94436860, 132211604, 165264505, 330529010, 661058020]

約数ペア:

[(1, 661058020), (2, 330529010), (4, 165264505), (5, 132211604), (7, 94436860), (10, 66105802), (14, 47218430), (20, 33052901), (28, 23609215), (35, 18887372), (49, 13490980), (70, 9443686), (98, 6745490), (140, 4721843), (196, 3372745), (245, 2698196), (490, 1349098), (653, 1012340), (980, 674549), (1033, 639940), (1306, 506170), (2066, 319970), (2612, 253085), (3265, 202468), (4132, 159985), (4571, 144620), (5165, 127988), (6530, 101234), (7231, 91420), (9142, 72310), (10330, 63994), (13060, 50617), (14462, 45710), (18284, 36155), (20660, 31997), (22855, 28924)]