647579140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{57923}}^1$

素因数の和:57988

約数の個数: 48

約数和(自身を含む): 1498609728

約数和(自身を除く): 851030588

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 172, 215, 260, 430, 559, 860, 1118, 2236, 2795, 5590, 11180, 57923, 115846, 231692, 289615, 579230, 752999, 1158460, 1505998, 2490689, 3011996, 3764995, 4981378, 7529990, 9962756, 12453445, 15059980, 24906890, 32378957, 49813780, 64757914, 129515828, 161894785, 323789570, 647579140]

約数ペア:

[(1, 647579140), (2, 323789570), (4, 161894785), (5, 129515828), (10, 64757914), (13, 49813780), (20, 32378957), (26, 24906890), (43, 15059980), (52, 12453445), (65, 9962756), (86, 7529990), (130, 4981378), (172, 3764995), (215, 3011996), (260, 2490689), (430, 1505998), (559, 1158460), (860, 752999), (1118, 579230), (2236, 289615), (2795, 231692), (5590, 115846), (11180, 57923)]