18387880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{3863}}^1$

素因数の和:3898

約数の個数: 64

約数和(自身を含む): 50077440

約数和(自身を除く): 31689560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 68, 70, 85, 119, 136, 140, 170, 238, 280, 340, 476, 595, 680, 952, 1190, 2380, 3863, 4760, 7726, 15452, 19315, 27041, 30904, 38630, 54082, 65671, 77260, 108164, 131342, 135205, 154520, 216328, 262684, 270410, 328355, 459697, 525368, 540820, 656710, 919394, 1081640, 1313420, 1838788, 2298485, 2626840, 3677576, 4596970, 9193940, 18387880]

約数ペア:

[(1, 18387880), (2, 9193940), (4, 4596970), (5, 3677576), (7, 2626840), (8, 2298485), (10, 1838788), (14, 1313420), (17, 1081640), (20, 919394), (28, 656710), (34, 540820), (35, 525368), (40, 459697), (56, 328355), (68, 270410), (70, 262684), (85, 216328), (119, 154520), (136, 135205), (140, 131342), (170, 108164), (238, 77260), (280, 65671), (340, 54082), (476, 38630), (595, 30904), (680, 27041), (952, 19315), (1190, 15452), (2380, 7726), (3863, 4760)]