21443380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21881}}^1$

素因数の和:21904

約数の個数: 36

約数和(自身を含む): 52385508

約数和(自身を除く): 30942128

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21881, 43762, 87524, 109405, 153167, 218810, 306334, 437620, 612668, 765835, 1072169, 1531670, 2144338, 3063340, 4288676, 5360845, 10721690, 21443380]

約数ペア:

[(1, 21443380), (2, 10721690), (4, 5360845), (5, 4288676), (7, 3063340), (10, 2144338), (14, 1531670), (20, 1072169), (28, 765835), (35, 612668), (49, 437620), (70, 306334), (98, 218810), (140, 153167), (196, 109405), (245, 87524), (490, 43762), (980, 21881)]