256179420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{203317}}^1$

素因数の和:203339

約数の個数: 72

約数和(自身を含む): 888093024

約数和(自身を除く): 631913604

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 203317, 406634, 609951, 813268, 1016585, 1219902, 1423219, 1829853, 2033170, 2439804, 2846438, 3049755, 3659706, 4066340, 4269657, 5692876, 6099510, 7116095, 7319412, 8539314, 9149265, 12199020, 12808971, 14232190, 17078628, 18298530, 21348285, 25617942, 28464380, 36597060, 42696570, 51235884, 64044855, 85393140, 128089710, 256179420]

約数ペア:

[(1, 256179420), (2, 128089710), (3, 85393140), (4, 64044855), (5, 51235884), (6, 42696570), (7, 36597060), (9, 28464380), (10, 25617942), (12, 21348285), (14, 18298530), (15, 17078628), (18, 14232190), (20, 12808971), (21, 12199020), (28, 9149265), (30, 8539314), (35, 7319412), (36, 7116095), (42, 6099510), (45, 5692876), (60, 4269657), (63, 4066340), (70, 3659706), (84, 3049755), (90, 2846438), (105, 2439804), (126, 2033170), (140, 1829853), (180, 1423219), (210, 1219902), (252, 1016585), (315, 813268), (420, 609951), (630, 406634), (1260, 203317)]