201945460

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{257}}^1\times {\mathrm{389}}^1$

素因数の和:756

約数の個数: 48

約数和(自身を含む): 431056080

約数和(自身を除く): 229110620

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 257, 389, 404, 505, 514, 778, 1010, 1028, 1285, 1556, 1945, 2020, 2570, 3890, 5140, 7780, 25957, 39289, 51914, 78578, 99973, 103828, 129785, 157156, 196445, 199946, 259570, 392890, 399892, 499865, 519140, 785780, 999730, 1999460, 10097273, 20194546, 40389092, 50486365, 100972730, 201945460]

約数ペア:

[(1, 201945460), (2, 100972730), (4, 50486365), (5, 40389092), (10, 20194546), (20, 10097273), (101, 1999460), (202, 999730), (257, 785780), (389, 519140), (404, 499865), (505, 399892), (514, 392890), (778, 259570), (1010, 199946), (1028, 196445), (1285, 157156), (1556, 129785), (1945, 103828), (2020, 99973), (2570, 78578), (3890, 51914), (5140, 39289), (7780, 25957)]