217257920

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:251

約数の個数: 168

約数和(自身を含む): 590239104

約数和(自身を除く): 372981184

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 32, 40, 44, 55, 62, 64, 80, 88, 110, 121, 124, 155, 160, 176, 181, 220, 242, 248, 310, 320, 341, 352, 362, 440, 484, 496, 605, 620, 682, 704, 724, 880, 905, 968, 992, 1210, 1240, 1364, 1448, 1705, 1760, 1810, 1936, 1984, 1991, 2420, 2480, 2728, 2896, 3410, 3520, 3620, 3751, 3872, 3982, 4840, 4960, 5456, 5611, 5792, 6820, 7240, 7502, 7744, 7964, 9680, 9920, 9955, 10912, 11222, 11584, 13640, 14480, 15004, 15928, 18755, 19360, 19910, 21824, 21901, 22444, 27280, 28055, 28960, 30008, 31856, 37510, 38720, 39820, 43802, 44888, 54560, 56110, 57920, 60016, 61721, 63712, 75020, 79640, 87604, 89776, 109120, 109505, 112220, 120032, 123442, 127424, 150040, 159280, 175208, 179552, 219010, 224440, 240064, 246884, 300080, 308605, 318560, 350416, 359104, 438020, 448880, 493768, 600160, 617210, 637120, 678931, 700832, 876040, 897760, 987536, 1200320, 1234420, 1357862, 1401664, 1752080, 1795520, 1975072, 2468840, 2715724, 3394655, 3504160, 3950144, 4937680, 5431448, 6789310, 7008320, 9875360, 10862896, 13578620, 19750720, 21725792, 27157240, 43451584, 54314480, 108628960, 217257920]

約数ペア:

[(1, 217257920), (2, 108628960), (4, 54314480), (5, 43451584), (8, 27157240), (10, 21725792), (11, 19750720), (16, 13578620), (20, 10862896), (22, 9875360), (31, 7008320), (32, 6789310), (40, 5431448), (44, 4937680), (55, 3950144), (62, 3504160), (64, 3394655), (80, 2715724), (88, 2468840), (110, 1975072), (121, 1795520), (124, 1752080), (155, 1401664), (160, 1357862), (176, 1234420), (181, 1200320), (220, 987536), (242, 897760), (248, 876040), (310, 700832), (320, 678931), (341, 637120), (352, 617210), (362, 600160), (440, 493768), (484, 448880), (496, 438020), (605, 359104), (620, 350416), (682, 318560), (704, 308605), (724, 300080), (880, 246884), (905, 240064), (968, 224440), (992, 219010), (1210, 179552), (1240, 175208), (1364, 159280), (1448, 150040), (1705, 127424), (1760, 123442), (1810, 120032), (1936, 112220), (1984, 109505), (1991, 109120), (2420, 89776), (2480, 87604), (2728, 79640), (2896, 75020), (3410, 63712), (3520, 61721), (3620, 60016), (3751, 57920), (3872, 56110), (3982, 54560), (4840, 44888), (4960, 43802), (5456, 39820), (5611, 38720), (5792, 37510), (6820, 31856), (7240, 30008), (7502, 28960), (7744, 28055), (7964, 27280), (9680, 22444), (9920, 21901), (9955, 21824), (10912, 19910), (11222, 19360), (11584, 18755), (13640, 15928), (14480, 15004)]