19738840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{397}}^1$

素因数の和:532

約数の個数: 64

約数和(自身を含む): 49001760

約数和(自身を除く): 29262920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 113, 220, 226, 397, 440, 452, 565, 794, 904, 1130, 1243, 1588, 1985, 2260, 2486, 3176, 3970, 4367, 4520, 4972, 6215, 7940, 8734, 9944, 12430, 15880, 17468, 21835, 24860, 34936, 43670, 44861, 49720, 87340, 89722, 174680, 179444, 224305, 358888, 448610, 493471, 897220, 986942, 1794440, 1973884, 2467355, 3947768, 4934710, 9869420, 19738840]

約数ペア:

[(1, 19738840), (2, 9869420), (4, 4934710), (5, 3947768), (8, 2467355), (10, 1973884), (11, 1794440), (20, 986942), (22, 897220), (40, 493471), (44, 448610), (55, 358888), (88, 224305), (110, 179444), (113, 174680), (220, 89722), (226, 87340), (397, 49720), (440, 44861), (452, 43670), (565, 34936), (794, 24860), (904, 21835), (1130, 17468), (1243, 15880), (1588, 12430), (1985, 9944), (2260, 8734), (2486, 7940), (3176, 6215), (3970, 4972), (4367, 4520)]