644850804

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{217561}}^1$

素因数の和:217600

約数の個数: 48

約数和(自身を含む): 1705686080

約数和(自身を除く): 1060835276

約数列:

[1, 2, 3, 4, 6, 12, 13, 19, 26, 38, 39, 52, 57, 76, 78, 114, 156, 228, 247, 494, 741, 988, 1482, 2964, 217561, 435122, 652683, 870244, 1305366, 2610732, 2828293, 4133659, 5656586, 8267318, 8484879, 11313172, 12400977, 16534636, 16969758, 24801954, 33939516, 49603908, 53737567, 107475134, 161212701, 214950268, 322425402, 644850804]

約数ペア:

[(1, 644850804), (2, 322425402), (3, 214950268), (4, 161212701), (6, 107475134), (12, 53737567), (13, 49603908), (19, 33939516), (26, 24801954), (38, 16969758), (39, 16534636), (52, 12400977), (57, 11313172), (76, 8484879), (78, 8267318), (114, 5656586), (156, 4133659), (228, 2828293), (247, 2610732), (494, 1305366), (741, 870244), (988, 652683), (1482, 435122), (2964, 217561)]