21346828

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{983}}^1$

素因数の和:1137

約数の個数: 24

約数和(自身を含む): 38435040

約数和(自身を除く): 17088212

約数列:

[1, 2, 4, 61, 89, 122, 178, 244, 356, 983, 1966, 3932, 5429, 10858, 21716, 59963, 87487, 119926, 174974, 239852, 349948, 5336707, 10673414, 21346828]

約数ペア:

[(1, 21346828), (2, 10673414), (4, 5336707), (61, 349948), (89, 239852), (122, 174974), (178, 119926), (244, 87487), (356, 59963), (983, 21716), (1966, 10858), (3932, 5429)]