21018021288

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{309781}}^1$

素因数の和:310058

約数の個数: 64

約数和(自身を含む): 57545104320

約数和(自身を除く): 36527083032

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 22, 24, 33, 44, 66, 88, 132, 257, 264, 514, 771, 1028, 1542, 2056, 2827, 3084, 5654, 6168, 8481, 11308, 16962, 22616, 33924, 67848, 309781, 619562, 929343, 1239124, 1858686, 2478248, 3407591, 3717372, 6815182, 7434744, 10222773, 13630364, 20445546, 27260728, 40891092, 79613717, 81782184, 159227434, 238841151, 318454868, 477682302, 636909736, 875750887, 955364604, 1751501774, 1910729208, 2627252661, 3503003548, 5254505322, 7006007096, 10509010644, 21018021288]

約数ペア:

[(1, 21018021288), (2, 10509010644), (3, 7006007096), (4, 5254505322), (6, 3503003548), (8, 2627252661), (11, 1910729208), (12, 1751501774), (22, 955364604), (24, 875750887), (33, 636909736), (44, 477682302), (66, 318454868), (88, 238841151), (132, 159227434), (257, 81782184), (264, 79613717), (514, 40891092), (771, 27260728), (1028, 20445546), (1542, 13630364), (2056, 10222773), (2827, 7434744), (3084, 6815182), (5654, 3717372), (6168, 3407591), (8481, 2478248), (11308, 1858686), (16962, 1239124), (22616, 929343), (33924, 619562), (67848, 309781)]