66961960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{983}}^1$

素因数の和:1138

約数の個数: 64

約数和(自身を含む): 163658880

約数和(自身を除く): 96696920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 131, 260, 262, 520, 524, 655, 983, 1048, 1310, 1703, 1966, 2620, 3406, 3932, 4915, 5240, 6812, 7864, 8515, 9830, 12779, 13624, 17030, 19660, 25558, 34060, 39320, 51116, 63895, 68120, 102232, 127790, 128773, 255580, 257546, 511160, 515092, 643865, 1030184, 1287730, 1674049, 2575460, 3348098, 5150920, 6696196, 8370245, 13392392, 16740490, 33480980, 66961960]

約数ペア:

[(1, 66961960), (2, 33480980), (4, 16740490), (5, 13392392), (8, 8370245), (10, 6696196), (13, 5150920), (20, 3348098), (26, 2575460), (40, 1674049), (52, 1287730), (65, 1030184), (104, 643865), (130, 515092), (131, 511160), (260, 257546), (262, 255580), (520, 128773), (524, 127790), (655, 102232), (983, 68120), (1048, 63895), (1310, 51116), (1703, 39320), (1966, 34060), (2620, 25558), (3406, 19660), (3932, 17030), (4915, 13624), (5240, 12779), (6812, 9830), (7864, 8515)]