3937940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{241}}^1$

素因数の和:312

約数の個数: 48

約数和(自身を含む): 8944320

約数和(自身を除く): 5006380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 76, 86, 95, 172, 190, 215, 241, 380, 430, 482, 817, 860, 964, 1205, 1634, 2410, 3268, 4085, 4579, 4820, 8170, 9158, 10363, 16340, 18316, 20726, 22895, 41452, 45790, 51815, 91580, 103630, 196897, 207260, 393794, 787588, 984485, 1968970, 3937940]

約数ペア:

[(1, 3937940), (2, 1968970), (4, 984485), (5, 787588), (10, 393794), (19, 207260), (20, 196897), (38, 103630), (43, 91580), (76, 51815), (86, 45790), (95, 41452), (172, 22895), (190, 20726), (215, 18316), (241, 16340), (380, 10363), (430, 9158), (482, 8170), (817, 4820), (860, 4579), (964, 4085), (1205, 3268), (1634, 2410)]