81293030

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{569}}^1$

素因数の和:753

約数の個数: 64

約数和(自身を含む): 181560960

約数和(自身を除く): 100267930

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 157, 182, 314, 455, 569, 785, 910, 1099, 1138, 1570, 2041, 2198, 2845, 3983, 4082, 5495, 5690, 7397, 7966, 10205, 10990, 14287, 14794, 19915, 20410, 28574, 36985, 39830, 51779, 71435, 73970, 89333, 103558, 142870, 178666, 258895, 446665, 517790, 625331, 893330, 1161329, 1250662, 2322658, 3126655, 5806645, 6253310, 8129303, 11613290, 16258606, 40646515, 81293030]

約数ペア:

[(1, 81293030), (2, 40646515), (5, 16258606), (7, 11613290), (10, 8129303), (13, 6253310), (14, 5806645), (26, 3126655), (35, 2322658), (65, 1250662), (70, 1161329), (91, 893330), (130, 625331), (157, 517790), (182, 446665), (314, 258895), (455, 178666), (569, 142870), (785, 103558), (910, 89333), (1099, 73970), (1138, 71435), (1570, 51779), (2041, 39830), (2198, 36985), (2845, 28574), (3983, 20410), (4082, 19915), (5495, 14794), (5690, 14287), (7397, 10990), (7966, 10205)]