19863760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{449}}^1$

素因数の和:548

約数の個数: 80

約数和(自身を含む): 53568000

約数和(自身を除く): 33704240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 79, 80, 112, 140, 158, 280, 316, 395, 449, 553, 560, 632, 790, 898, 1106, 1264, 1580, 1796, 2212, 2245, 2765, 3143, 3160, 3592, 4424, 4490, 5530, 6286, 6320, 7184, 8848, 8980, 11060, 12572, 15715, 17960, 22120, 25144, 31430, 35471, 35920, 44240, 50288, 62860, 70942, 125720, 141884, 177355, 248297, 251440, 283768, 354710, 496594, 567536, 709420, 993188, 1241485, 1418840, 1986376, 2482970, 2837680, 3972752, 4965940, 9931880, 19863760]

約数ペア:

[(1, 19863760), (2, 9931880), (4, 4965940), (5, 3972752), (7, 2837680), (8, 2482970), (10, 1986376), (14, 1418840), (16, 1241485), (20, 993188), (28, 709420), (35, 567536), (40, 496594), (56, 354710), (70, 283768), (79, 251440), (80, 248297), (112, 177355), (140, 141884), (158, 125720), (280, 70942), (316, 62860), (395, 50288), (449, 44240), (553, 35920), (560, 35471), (632, 31430), (790, 25144), (898, 22120), (1106, 17960), (1264, 15715), (1580, 12572), (1796, 11060), (2212, 8980), (2245, 8848), (2765, 7184), (3143, 6320), (3160, 6286), (3592, 5530), (4424, 4490)]