18591320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:129

約数の個数: 128

約数和(自身を含む): 49766400

約数和(自身を除く): 31175080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 29, 31, 40, 44, 47, 55, 58, 62, 88, 94, 110, 116, 124, 145, 155, 188, 220, 232, 235, 248, 290, 310, 319, 341, 376, 440, 470, 517, 580, 620, 638, 682, 899, 940, 1034, 1160, 1240, 1276, 1363, 1364, 1457, 1595, 1705, 1798, 1880, 2068, 2552, 2585, 2726, 2728, 2914, 3190, 3410, 3596, 4136, 4495, 5170, 5452, 5828, 6380, 6815, 6820, 7192, 7285, 8990, 9889, 10340, 10904, 11656, 12760, 13630, 13640, 14570, 14993, 16027, 17980, 19778, 20680, 27260, 29140, 29986, 32054, 35960, 39556, 42253, 49445, 54520, 58280, 59972, 64108, 74965, 79112, 80135, 84506, 98890, 119944, 128216, 149930, 160270, 169012, 197780, 211265, 299860, 320540, 338024, 395560, 422530, 464783, 599720, 641080, 845060, 929566, 1690120, 1859132, 2323915, 3718264, 4647830, 9295660, 18591320]

約数ペア:

[(1, 18591320), (2, 9295660), (4, 4647830), (5, 3718264), (8, 2323915), (10, 1859132), (11, 1690120), (20, 929566), (22, 845060), (29, 641080), (31, 599720), (40, 464783), (44, 422530), (47, 395560), (55, 338024), (58, 320540), (62, 299860), (88, 211265), (94, 197780), (110, 169012), (116, 160270), (124, 149930), (145, 128216), (155, 119944), (188, 98890), (220, 84506), (232, 80135), (235, 79112), (248, 74965), (290, 64108), (310, 59972), (319, 58280), (341, 54520), (376, 49445), (440, 42253), (470, 39556), (517, 35960), (580, 32054), (620, 29986), (638, 29140), (682, 27260), (899, 20680), (940, 19778), (1034, 17980), (1160, 16027), (1240, 14993), (1276, 14570), (1363, 13640), (1364, 13630), (1457, 12760), (1595, 11656), (1705, 10904), (1798, 10340), (1880, 9889), (2068, 8990), (2552, 7285), (2585, 7192), (2726, 6820), (2728, 6815), (2914, 6380), (3190, 5828), (3410, 5452), (3596, 5170), (4136, 4495)]