19750720

素因数分解:

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

素因数の和:240

約数の個数: 112

約数和(自身を含む): 53254656

約数和(自身を除く): 33503936

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 32, 40, 44, 55, 62, 64, 80, 88, 110, 124, 155, 160, 176, 181, 220, 248, 310, 320, 341, 352, 362, 440, 496, 620, 682, 704, 724, 880, 905, 992, 1240, 1364, 1448, 1705, 1760, 1810, 1984, 1991, 2480, 2728, 2896, 3410, 3520, 3620, 3982, 4960, 5456, 5611, 5792, 6820, 7240, 7964, 9920, 9955, 10912, 11222, 11584, 13640, 14480, 15928, 19910, 21824, 22444, 27280, 28055, 28960, 31856, 39820, 44888, 54560, 56110, 57920, 61721, 63712, 79640, 89776, 109120, 112220, 123442, 127424, 159280, 179552, 224440, 246884, 308605, 318560, 359104, 448880, 493768, 617210, 637120, 897760, 987536, 1234420, 1795520, 1975072, 2468840, 3950144, 4937680, 9875360, 19750720]

約数ペア:

[(1, 19750720), (2, 9875360), (4, 4937680), (5, 3950144), (8, 2468840), (10, 1975072), (11, 1795520), (16, 1234420), (20, 987536), (22, 897760), (31, 637120), (32, 617210), (40, 493768), (44, 448880), (55, 359104), (62, 318560), (64, 308605), (80, 246884), (88, 224440), (110, 179552), (124, 159280), (155, 127424), (160, 123442), (176, 112220), (181, 109120), (220, 89776), (248, 79640), (310, 63712), (320, 61721), (341, 57920), (352, 56110), (362, 54560), (440, 44888), (496, 39820), (620, 31856), (682, 28960), (704, 28055), (724, 27280), (880, 22444), (905, 21824), (992, 19910), (1240, 15928), (1364, 14480), (1448, 13640), (1705, 11584), (1760, 11222), (1810, 10912), (1984, 9955), (1991, 9920), (2480, 7964), (2728, 7240), (2896, 6820), (3410, 5792), (3520, 5611), (3620, 5456), (3982, 4960)]