21020940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4027}}^1$

素因数の和:4071

約数の個数: 72

約数和(自身を含む): 65978640

約数和(自身を除く): 44957700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 87, 90, 116, 145, 174, 180, 261, 290, 348, 435, 522, 580, 870, 1044, 1305, 1740, 2610, 4027, 5220, 8054, 12081, 16108, 20135, 24162, 36243, 40270, 48324, 60405, 72486, 80540, 116783, 120810, 144972, 181215, 233566, 241620, 350349, 362430, 467132, 583915, 700698, 724860, 1051047, 1167830, 1401396, 1751745, 2102094, 2335660, 3503490, 4204188, 5255235, 7006980, 10510470, 21020940]

約数ペア:

[(1, 21020940), (2, 10510470), (3, 7006980), (4, 5255235), (5, 4204188), (6, 3503490), (9, 2335660), (10, 2102094), (12, 1751745), (15, 1401396), (18, 1167830), (20, 1051047), (29, 724860), (30, 700698), (36, 583915), (45, 467132), (58, 362430), (60, 350349), (87, 241620), (90, 233566), (116, 181215), (145, 144972), (174, 120810), (180, 116783), (261, 80540), (290, 72486), (348, 60405), (435, 48324), (522, 40270), (580, 36243), (870, 24162), (1044, 20135), (1305, 16108), (1740, 12081), (2610, 8054), (4027, 5220)]