89891920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{421}}^1$

素因数の和:608

約数の個数: 80

約数和(自身を含む): 223231248

約数和(自身を除く): 133339328

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 157, 170, 272, 314, 340, 421, 628, 680, 785, 842, 1256, 1360, 1570, 1684, 2105, 2512, 2669, 3140, 3368, 4210, 5338, 6280, 6736, 7157, 8420, 10676, 12560, 13345, 14314, 16840, 21352, 26690, 28628, 33680, 35785, 42704, 53380, 57256, 66097, 71570, 106760, 114512, 132194, 143140, 213520, 264388, 286280, 330485, 528776, 572560, 660970, 1057552, 1123649, 1321940, 2247298, 2643880, 4494596, 5287760, 5618245, 8989192, 11236490, 17978384, 22472980, 44945960, 89891920]

約数ペア:

[(1, 89891920), (2, 44945960), (4, 22472980), (5, 17978384), (8, 11236490), (10, 8989192), (16, 5618245), (17, 5287760), (20, 4494596), (34, 2643880), (40, 2247298), (68, 1321940), (80, 1123649), (85, 1057552), (136, 660970), (157, 572560), (170, 528776), (272, 330485), (314, 286280), (340, 264388), (421, 213520), (628, 143140), (680, 132194), (785, 114512), (842, 106760), (1256, 71570), (1360, 66097), (1570, 57256), (1684, 53380), (2105, 42704), (2512, 35785), (2669, 33680), (3140, 28628), (3368, 26690), (4210, 21352), (5338, 16840), (6280, 14314), (6736, 13345), (7157, 12560), (8420, 10676)]