21413684

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:264

約数の個数: 48

約数和(自身を含む): 41664000

約数和(自身を除く): 20250316

約数列:

[1, 2, 4, 19, 31, 38, 61, 62, 76, 122, 124, 149, 244, 298, 589, 596, 1159, 1178, 1891, 2318, 2356, 2831, 3782, 4619, 4636, 5662, 7564, 9089, 9238, 11324, 18178, 18476, 35929, 36356, 71858, 87761, 143716, 172691, 175522, 281759, 345382, 351044, 563518, 690764, 1127036, 5353421, 10706842, 21413684]

約数ペア:

[(1, 21413684), (2, 10706842), (4, 5353421), (19, 1127036), (31, 690764), (38, 563518), (61, 351044), (62, 345382), (76, 281759), (122, 175522), (124, 172691), (149, 143716), (244, 87761), (298, 71858), (589, 36356), (596, 35929), (1159, 18476), (1178, 18178), (1891, 11324), (2318, 9238), (2356, 9089), (2831, 7564), (3782, 5662), (4619, 4636)]