8007440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{181}}^1$

素因数の和:280

約数の個数: 80

約数和(自身を含む): 21665280

約数和(自身を除く): 13657840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 79, 80, 112, 140, 158, 181, 280, 316, 362, 395, 553, 560, 632, 724, 790, 905, 1106, 1264, 1267, 1448, 1580, 1810, 2212, 2534, 2765, 2896, 3160, 3620, 4424, 5068, 5530, 6320, 6335, 7240, 8848, 10136, 11060, 12670, 14299, 14480, 20272, 22120, 25340, 28598, 44240, 50680, 57196, 71495, 100093, 101360, 114392, 142990, 200186, 228784, 285980, 400372, 500465, 571960, 800744, 1000930, 1143920, 1601488, 2001860, 4003720, 8007440]

約数ペア:

[(1, 8007440), (2, 4003720), (4, 2001860), (5, 1601488), (7, 1143920), (8, 1000930), (10, 800744), (14, 571960), (16, 500465), (20, 400372), (28, 285980), (35, 228784), (40, 200186), (56, 142990), (70, 114392), (79, 101360), (80, 100093), (112, 71495), (140, 57196), (158, 50680), (181, 44240), (280, 28598), (316, 25340), (362, 22120), (395, 20272), (553, 14480), (560, 14299), (632, 12670), (724, 11060), (790, 10136), (905, 8848), (1106, 7240), (1264, 6335), (1267, 6320), (1448, 5530), (1580, 5068), (1810, 4424), (2212, 3620), (2534, 3160), (2765, 2896)]