28694840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{317}}^1$

素因数の和:432

約数の個数: 64

約数和(自身を含む): 67772160

約数和(自身を除く): 39077320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 73, 124, 146, 155, 248, 292, 310, 317, 365, 584, 620, 634, 730, 1240, 1268, 1460, 1585, 2263, 2536, 2920, 3170, 4526, 6340, 9052, 9827, 11315, 12680, 18104, 19654, 22630, 23141, 39308, 45260, 46282, 49135, 78616, 90520, 92564, 98270, 115705, 185128, 196540, 231410, 393080, 462820, 717371, 925640, 1434742, 2869484, 3586855, 5738968, 7173710, 14347420, 28694840]

約数ペア:

[(1, 28694840), (2, 14347420), (4, 7173710), (5, 5738968), (8, 3586855), (10, 2869484), (20, 1434742), (31, 925640), (40, 717371), (62, 462820), (73, 393080), (124, 231410), (146, 196540), (155, 185128), (248, 115705), (292, 98270), (310, 92564), (317, 90520), (365, 78616), (584, 49135), (620, 46282), (634, 45260), (730, 39308), (1240, 23141), (1268, 22630), (1460, 19654), (1585, 18104), (2263, 12680), (2536, 11315), (2920, 9827), (3170, 9052), (4526, 6340)]