19881160

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{173}}^1$

素因数の和:227

約数の個数: 96

約数和(自身を含む): 51584040

約数和(自身を除く): 31702880

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 85, 104, 130, 136, 169, 170, 173, 221, 260, 338, 340, 346, 442, 520, 676, 680, 692, 845, 865, 884, 1105, 1352, 1384, 1690, 1730, 1768, 2210, 2249, 2873, 2941, 3380, 3460, 4420, 4498, 5746, 5882, 6760, 6920, 8840, 8996, 11245, 11492, 11764, 14365, 14705, 17992, 22490, 22984, 23528, 28730, 29237, 29410, 38233, 44980, 57460, 58474, 58820, 76466, 89960, 114920, 116948, 117640, 146185, 152932, 191165, 233896, 292370, 305864, 382330, 497029, 584740, 764660, 994058, 1169480, 1529320, 1988116, 2485145, 3976232, 4970290, 9940580, 19881160]

約数ペア:

[(1, 19881160), (2, 9940580), (4, 4970290), (5, 3976232), (8, 2485145), (10, 1988116), (13, 1529320), (17, 1169480), (20, 994058), (26, 764660), (34, 584740), (40, 497029), (52, 382330), (65, 305864), (68, 292370), (85, 233896), (104, 191165), (130, 152932), (136, 146185), (169, 117640), (170, 116948), (173, 114920), (221, 89960), (260, 76466), (338, 58820), (340, 58474), (346, 57460), (442, 44980), (520, 38233), (676, 29410), (680, 29237), (692, 28730), (845, 23528), (865, 22984), (884, 22490), (1105, 17992), (1352, 14705), (1384, 14365), (1690, 11764), (1730, 11492), (1768, 11245), (2210, 8996), (2249, 8840), (2873, 6920), (2941, 6760), (3380, 5882), (3460, 5746), (4420, 4498)]