215174820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{512321}}^1$

素因数の和:512340

約数の個数: 48

約数和(自身を含む): 688560768

約数和(自身を除く): 473385948

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 512321, 1024642, 1536963, 2049284, 2561605, 3073926, 3586247, 5123210, 6147852, 7172494, 7684815, 10246420, 10758741, 14344988, 15369630, 17931235, 21517482, 30739260, 35862470, 43034964, 53793705, 71724940, 107587410, 215174820]

約数ペア:

[(1, 215174820), (2, 107587410), (3, 71724940), (4, 53793705), (5, 43034964), (6, 35862470), (7, 30739260), (10, 21517482), (12, 17931235), (14, 15369630), (15, 14344988), (20, 10758741), (21, 10246420), (28, 7684815), (30, 7172494), (35, 6147852), (42, 5123210), (60, 3586247), (70, 3073926), (84, 2561605), (105, 2049284), (140, 1536963), (210, 1024642), (420, 512321)]