20259920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14897}}^1$

素因数の和:14927

約数の個数: 40

約数和(自身を含む): 49878504

約数和(自身を除く): 29618584

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 14897, 29794, 59588, 74485, 119176, 148970, 238352, 253249, 297940, 506498, 595880, 1012996, 1191760, 1266245, 2025992, 2532490, 4051984, 5064980, 10129960, 20259920]

約数ペア:

[(1, 20259920), (2, 10129960), (4, 5064980), (5, 4051984), (8, 2532490), (10, 2025992), (16, 1266245), (17, 1191760), (20, 1012996), (34, 595880), (40, 506498), (68, 297940), (80, 253249), (85, 238352), (136, 148970), (170, 119176), (272, 74485), (340, 59588), (680, 29794), (1360, 14897)]