257123100

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{65929}}^1$

素因数の和:65959

約数の個数: 72

約数和(自身を含む): 801181360

約数和(自身を除く): 544058260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900, 65929, 131858, 197787, 263716, 329645, 395574, 659290, 791148, 857077, 988935, 1318580, 1648225, 1714154, 1977870, 2571231, 3296450, 3428308, 3955740, 4285385, 4944675, 5142462, 6592900, 8570770, 9889350, 10284924, 12856155, 17141540, 19778700, 21426925, 25712310, 42853850, 51424620, 64280775, 85707700, 128561550, 257123100]

約数ペア:

[(1, 257123100), (2, 128561550), (3, 85707700), (4, 64280775), (5, 51424620), (6, 42853850), (10, 25712310), (12, 21426925), (13, 19778700), (15, 17141540), (20, 12856155), (25, 10284924), (26, 9889350), (30, 8570770), (39, 6592900), (50, 5142462), (52, 4944675), (60, 4285385), (65, 3955740), (75, 3428308), (78, 3296450), (100, 2571231), (130, 1977870), (150, 1714154), (156, 1648225), (195, 1318580), (260, 988935), (300, 857077), (325, 791148), (390, 659290), (650, 395574), (780, 329645), (975, 263716), (1300, 197787), (1950, 131858), (3900, 65929)]