201421180

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{257}}^1\times {\mathrm{263}}^1$

素因数の和:678

約数の個数: 48

約数和(自身を含む): 429105600

約数和(自身を除く): 227684420

約数列:

[1, 2, 4, 5, 10, 20, 149, 257, 263, 298, 514, 526, 596, 745, 1028, 1052, 1285, 1315, 1490, 2570, 2630, 2980, 5140, 5260, 38293, 39187, 67591, 76586, 78374, 135182, 153172, 156748, 191465, 195935, 270364, 337955, 382930, 391870, 675910, 765860, 783740, 1351820, 10071059, 20142118, 40284236, 50355295, 100710590, 201421180]

約数ペア:

[(1, 201421180), (2, 100710590), (4, 50355295), (5, 40284236), (10, 20142118), (20, 10071059), (149, 1351820), (257, 783740), (263, 765860), (298, 675910), (514, 391870), (526, 382930), (596, 337955), (745, 270364), (1028, 195935), (1052, 191465), (1285, 156748), (1315, 153172), (1490, 135182), (2570, 78374), (2630, 76586), (2980, 67591), (5140, 39187), (5260, 38293)]