20936580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{631}}^1$

素因数の和:729

約数の個数: 96

約数和(自身を含む): 67952640

約数和(自身を除く): 47016060

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 79, 84, 105, 140, 158, 210, 237, 316, 395, 420, 474, 553, 631, 790, 948, 1106, 1185, 1262, 1580, 1659, 1893, 2212, 2370, 2524, 2765, 3155, 3318, 3786, 4417, 4740, 5530, 6310, 6636, 7572, 8295, 8834, 9465, 11060, 12620, 13251, 16590, 17668, 18930, 22085, 26502, 33180, 37860, 44170, 49849, 53004, 66255, 88340, 99698, 132510, 149547, 199396, 249245, 265020, 299094, 348943, 498490, 598188, 697886, 747735, 996980, 1046829, 1395772, 1495470, 1744715, 2093658, 2990940, 3489430, 4187316, 5234145, 6978860, 10468290, 20936580]

約数ペア:

[(1, 20936580), (2, 10468290), (3, 6978860), (4, 5234145), (5, 4187316), (6, 3489430), (7, 2990940), (10, 2093658), (12, 1744715), (14, 1495470), (15, 1395772), (20, 1046829), (21, 996980), (28, 747735), (30, 697886), (35, 598188), (42, 498490), (60, 348943), (70, 299094), (79, 265020), (84, 249245), (105, 199396), (140, 149547), (158, 132510), (210, 99698), (237, 88340), (316, 66255), (395, 53004), (420, 49849), (474, 44170), (553, 37860), (631, 33180), (790, 26502), (948, 22085), (1106, 18930), (1185, 17668), (1262, 16590), (1580, 13251), (1659, 12620), (1893, 11060), (2212, 9465), (2370, 8834), (2524, 8295), (2765, 7572), (3155, 6636), (3318, 6310), (3786, 5530), (4417, 4740)]