18937870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{491}}^1$

素因数の和:553

約数の個数: 64

約数和(自身を含む): 42508800

約数和(自身を除く): 23570930

約数列:

[1, 2, 5, 7, 10, 14, 19, 29, 35, 38, 58, 70, 95, 133, 145, 190, 203, 266, 290, 406, 491, 551, 665, 982, 1015, 1102, 1330, 2030, 2455, 2755, 3437, 3857, 4910, 5510, 6874, 7714, 9329, 14239, 17185, 18658, 19285, 28478, 34370, 38570, 46645, 65303, 71195, 93290, 99673, 130606, 142390, 199346, 270541, 326515, 498365, 541082, 653030, 996730, 1352705, 1893787, 2705410, 3787574, 9468935, 18937870]

約数ペア:

[(1, 18937870), (2, 9468935), (5, 3787574), (7, 2705410), (10, 1893787), (14, 1352705), (19, 996730), (29, 653030), (35, 541082), (38, 498365), (58, 326515), (70, 270541), (95, 199346), (133, 142390), (145, 130606), (190, 99673), (203, 93290), (266, 71195), (290, 65303), (406, 46645), (491, 38570), (551, 34370), (665, 28478), (982, 19285), (1015, 18658), (1102, 17185), (1330, 14239), (2030, 9329), (2455, 7714), (2755, 6874), (3437, 5510), (3857, 4910)]