1801580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{431}}^1$

素因数の和:470

約数の個数: 48

約数和(自身を含む): 4354560

約数和(自身を除く): 2552980

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 431, 836, 862, 1045, 1724, 2090, 2155, 4180, 4310, 4741, 8189, 8620, 9482, 16378, 18964, 23705, 32756, 40945, 47410, 81890, 90079, 94820, 163780, 180158, 360316, 450395, 900790, 1801580]

約数ペア:

[(1, 1801580), (2, 900790), (4, 450395), (5, 360316), (10, 180158), (11, 163780), (19, 94820), (20, 90079), (22, 81890), (38, 47410), (44, 40945), (55, 32756), (76, 23705), (95, 18964), (110, 16378), (190, 9482), (209, 8620), (220, 8189), (380, 4741), (418, 4310), (431, 4180), (836, 2155), (862, 2090), (1045, 1724)]