51221720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{557}}^1$

素因数の和:609

約数の個数: 96

約数和(自身を含む): 133585200

約数和(自身を除く): 82363480

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 121, 152, 190, 209, 220, 242, 380, 418, 440, 484, 557, 605, 760, 836, 968, 1045, 1114, 1210, 1672, 2090, 2228, 2299, 2420, 2785, 4180, 4456, 4598, 4840, 5570, 6127, 8360, 9196, 10583, 11140, 11495, 12254, 18392, 21166, 22280, 22990, 24508, 30635, 42332, 45980, 49016, 52915, 61270, 67397, 84664, 91960, 105830, 116413, 122540, 134794, 211660, 232826, 245080, 269588, 336985, 423320, 465652, 539176, 582065, 673970, 931304, 1164130, 1280543, 1347940, 2328260, 2561086, 2695880, 4656520, 5122172, 6402715, 10244344, 12805430, 25610860, 51221720]

約数ペア:

[(1, 51221720), (2, 25610860), (4, 12805430), (5, 10244344), (8, 6402715), (10, 5122172), (11, 4656520), (19, 2695880), (20, 2561086), (22, 2328260), (38, 1347940), (40, 1280543), (44, 1164130), (55, 931304), (76, 673970), (88, 582065), (95, 539176), (110, 465652), (121, 423320), (152, 336985), (190, 269588), (209, 245080), (220, 232826), (242, 211660), (380, 134794), (418, 122540), (440, 116413), (484, 105830), (557, 91960), (605, 84664), (760, 67397), (836, 61270), (968, 52915), (1045, 49016), (1114, 45980), (1210, 42332), (1672, 30635), (2090, 24508), (2228, 22990), (2299, 22280), (2420, 21166), (2785, 18392), (4180, 12254), (4456, 11495), (4598, 11140), (4840, 10583), (5570, 9196), (6127, 8360)]