51486500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{89}}^2$

素因数の和:210

約数の個数: 72

約数和(自身を含む): 122472168

約数和(自身を除く): 70985668

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 89, 100, 125, 130, 178, 250, 260, 325, 356, 445, 500, 650, 890, 1157, 1300, 1625, 1780, 2225, 2314, 3250, 4450, 4628, 5785, 6500, 7921, 8900, 11125, 11570, 15842, 22250, 23140, 28925, 31684, 39605, 44500, 57850, 79210, 102973, 115700, 144625, 158420, 198025, 205946, 289250, 396050, 411892, 514865, 578500, 792100, 990125, 1029730, 1980250, 2059460, 2574325, 3960500, 5148650, 10297300, 12871625, 25743250, 51486500]

約数ペア:

[(1, 51486500), (2, 25743250), (4, 12871625), (5, 10297300), (10, 5148650), (13, 3960500), (20, 2574325), (25, 2059460), (26, 1980250), (50, 1029730), (52, 990125), (65, 792100), (89, 578500), (100, 514865), (125, 411892), (130, 396050), (178, 289250), (250, 205946), (260, 198025), (325, 158420), (356, 144625), (445, 115700), (500, 102973), (650, 79210), (890, 57850), (1157, 44500), (1300, 39605), (1625, 31684), (1780, 28925), (2225, 23140), (2314, 22250), (3250, 15842), (4450, 11570), (4628, 11125), (5785, 8900), (6500, 7921)]