18478660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{139}}^1$

素因数の和:205

約数の個数: 72

約数和(自身を含む): 43323840

約数和(自身を除く): 24845180

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 34, 46, 68, 85, 92, 115, 139, 170, 230, 278, 289, 340, 391, 460, 556, 578, 695, 782, 1156, 1390, 1445, 1564, 1955, 2363, 2780, 2890, 3197, 3910, 4726, 5780, 6394, 6647, 7820, 9452, 11815, 12788, 13294, 15985, 23630, 26588, 31970, 33235, 40171, 47260, 54349, 63940, 66470, 80342, 108698, 132940, 160684, 200855, 217396, 271745, 401710, 543490, 803420, 923933, 1086980, 1847866, 3695732, 4619665, 9239330, 18478660]

約数ペア:

[(1, 18478660), (2, 9239330), (4, 4619665), (5, 3695732), (10, 1847866), (17, 1086980), (20, 923933), (23, 803420), (34, 543490), (46, 401710), (68, 271745), (85, 217396), (92, 200855), (115, 160684), (139, 132940), (170, 108698), (230, 80342), (278, 66470), (289, 63940), (340, 54349), (391, 47260), (460, 40171), (556, 33235), (578, 31970), (695, 26588), (782, 23630), (1156, 15985), (1390, 13294), (1445, 12788), (1564, 11815), (1955, 9452), (2363, 7820), (2780, 6647), (2890, 6394), (3197, 5780), (3910, 4726)]