19928280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2339}}^1$

素因数の和:2424

約数の個数: 64

約数和(自身を含む): 60652800

約数和(自身を除く): 40724520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 71, 120, 142, 213, 284, 355, 426, 568, 710, 852, 1065, 1420, 1704, 2130, 2339, 2840, 4260, 4678, 7017, 8520, 9356, 11695, 14034, 18712, 23390, 28068, 35085, 46780, 56136, 70170, 93560, 140340, 166069, 280680, 332138, 498207, 664276, 830345, 996414, 1328552, 1660690, 1992828, 2491035, 3321380, 3985656, 4982070, 6642760, 9964140, 19928280]

約数ペア:

[(1, 19928280), (2, 9964140), (3, 6642760), (4, 4982070), (5, 3985656), (6, 3321380), (8, 2491035), (10, 1992828), (12, 1660690), (15, 1328552), (20, 996414), (24, 830345), (30, 664276), (40, 498207), (60, 332138), (71, 280680), (120, 166069), (142, 140340), (213, 93560), (284, 70170), (355, 56136), (426, 46780), (568, 35085), (710, 28068), (852, 23390), (1065, 18712), (1420, 14034), (1704, 11695), (2130, 9356), (2339, 8520), (2840, 7017), (4260, 4678)]