15804580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{199}}^1$

素因数の和:257

約数の個数: 72

約数和(自身を含む): 38404800

約数和(自身を除く): 22600220

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 199, 209, 220, 361, 380, 398, 418, 722, 796, 836, 995, 1045, 1444, 1805, 1990, 2090, 2189, 3610, 3781, 3971, 3980, 4180, 4378, 7220, 7562, 7942, 8756, 10945, 15124, 15884, 18905, 19855, 21890, 37810, 39710, 41591, 43780, 71839, 75620, 79420, 83182, 143678, 166364, 207955, 287356, 359195, 415910, 718390, 790229, 831820, 1436780, 1580458, 3160916, 3951145, 7902290, 15804580]

約数ペア:

[(1, 15804580), (2, 7902290), (4, 3951145), (5, 3160916), (10, 1580458), (11, 1436780), (19, 831820), (20, 790229), (22, 718390), (38, 415910), (44, 359195), (55, 287356), (76, 207955), (95, 166364), (110, 143678), (190, 83182), (199, 79420), (209, 75620), (220, 71839), (361, 43780), (380, 41591), (398, 39710), (418, 37810), (722, 21890), (796, 19855), (836, 18905), (995, 15884), (1045, 15124), (1444, 10945), (1805, 8756), (1990, 7942), (2090, 7562), (2189, 7220), (3610, 4378), (3781, 4180), (3971, 3980)]