31310290

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1$

素因数の和:319

約数の個数: 64

約数和(自身を含む): 65940480

約数和(自身を除く): 34630190

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 71, 95, 110, 142, 190, 209, 211, 355, 418, 422, 710, 781, 1045, 1055, 1349, 1562, 2090, 2110, 2321, 2698, 3905, 4009, 4642, 6745, 7810, 8018, 11605, 13490, 14839, 14981, 20045, 23210, 29678, 29962, 40090, 44099, 74195, 74905, 88198, 148390, 149810, 164791, 220495, 284639, 329582, 440990, 569278, 823955, 1423195, 1647910, 2846390, 3131029, 6262058, 15655145, 31310290]

約数ペア:

[(1, 31310290), (2, 15655145), (5, 6262058), (10, 3131029), (11, 2846390), (19, 1647910), (22, 1423195), (38, 823955), (55, 569278), (71, 440990), (95, 329582), (110, 284639), (142, 220495), (190, 164791), (209, 149810), (211, 148390), (355, 88198), (418, 74905), (422, 74195), (710, 44099), (781, 40090), (1045, 29962), (1055, 29678), (1349, 23210), (1562, 20045), (2090, 14981), (2110, 14839), (2321, 13490), (2698, 11605), (3905, 8018), (4009, 7810), (4642, 6745)]