259494020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{127}}^1\times {\mathrm{283}}^1$

素因数の和:457

約数の個数: 72

約数和(自身を含む): 581704704

約数和(自身を除く): 322210684

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 127, 190, 254, 283, 361, 380, 508, 566, 635, 722, 1132, 1270, 1415, 1444, 1805, 2413, 2540, 2830, 3610, 4826, 5377, 5660, 7220, 9652, 10754, 12065, 21508, 24130, 26885, 35941, 45847, 48260, 53770, 71882, 91694, 102163, 107540, 143764, 179705, 183388, 204326, 229235, 359410, 408652, 458470, 510815, 682879, 718820, 916940, 1021630, 1365758, 2043260, 2731516, 3414395, 6828790, 12974701, 13657580, 25949402, 51898804, 64873505, 129747010, 259494020]

約数ペア:

[(1, 259494020), (2, 129747010), (4, 64873505), (5, 51898804), (10, 25949402), (19, 13657580), (20, 12974701), (38, 6828790), (76, 3414395), (95, 2731516), (127, 2043260), (190, 1365758), (254, 1021630), (283, 916940), (361, 718820), (380, 682879), (508, 510815), (566, 458470), (635, 408652), (722, 359410), (1132, 229235), (1270, 204326), (1415, 183388), (1444, 179705), (1805, 143764), (2413, 107540), (2540, 102163), (2830, 91694), (3610, 71882), (4826, 53770), (5377, 48260), (5660, 45847), (7220, 35941), (9652, 26885), (10754, 24130), (12065, 21508)]