28026040

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{181}}^1$

素因数の和:285

約数の個数: 96

約数和(自身を含む): 74692800

約数和(自身を除く): 46666760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 79, 98, 140, 158, 181, 196, 245, 280, 316, 362, 392, 395, 490, 553, 632, 724, 790, 905, 980, 1106, 1267, 1448, 1580, 1810, 1960, 2212, 2534, 2765, 3160, 3620, 3871, 4424, 5068, 5530, 6335, 7240, 7742, 8869, 10136, 11060, 12670, 14299, 15484, 17738, 19355, 22120, 25340, 28598, 30968, 35476, 38710, 44345, 50680, 57196, 70952, 71495, 77420, 88690, 100093, 114392, 142990, 154840, 177380, 200186, 285980, 354760, 400372, 500465, 571960, 700651, 800744, 1000930, 1401302, 2001860, 2802604, 3503255, 4003720, 5605208, 7006510, 14013020, 28026040]

約数ペア:

[(1, 28026040), (2, 14013020), (4, 7006510), (5, 5605208), (7, 4003720), (8, 3503255), (10, 2802604), (14, 2001860), (20, 1401302), (28, 1000930), (35, 800744), (40, 700651), (49, 571960), (56, 500465), (70, 400372), (79, 354760), (98, 285980), (140, 200186), (158, 177380), (181, 154840), (196, 142990), (245, 114392), (280, 100093), (316, 88690), (362, 77420), (392, 71495), (395, 70952), (490, 57196), (553, 50680), (632, 44345), (724, 38710), (790, 35476), (905, 30968), (980, 28598), (1106, 25340), (1267, 22120), (1448, 19355), (1580, 17738), (1810, 15484), (1960, 14299), (2212, 12670), (2534, 11060), (2765, 10136), (3160, 8869), (3620, 7742), (3871, 7240), (4424, 6335), (5068, 5530)]