19912893

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{349}}^1$

素因数の和:402

約数の個数: 64

約数和(自身を含む): 37632000

約数和(自身を除く): 17719107

約数列:

[1, 3, 7, 11, 13, 19, 21, 33, 39, 57, 77, 91, 133, 143, 209, 231, 247, 273, 349, 399, 429, 627, 741, 1001, 1047, 1463, 1729, 2443, 2717, 3003, 3839, 4389, 4537, 5187, 6631, 7329, 8151, 11517, 13611, 19019, 19893, 26873, 31759, 46417, 49907, 57057, 72941, 80619, 86203, 95277, 139251, 149721, 218823, 258609, 349349, 510587, 603421, 948233, 1048047, 1531761, 1810263, 2844699, 6637631, 19912893]

約数ペア:

[(1, 19912893), (3, 6637631), (7, 2844699), (11, 1810263), (13, 1531761), (19, 1048047), (21, 948233), (33, 603421), (39, 510587), (57, 349349), (77, 258609), (91, 218823), (133, 149721), (143, 139251), (209, 95277), (231, 86203), (247, 80619), (273, 72941), (349, 57057), (399, 49907), (429, 46417), (627, 31759), (741, 26873), (1001, 19893), (1047, 19019), (1463, 13611), (1729, 11517), (2443, 8151), (2717, 7329), (3003, 6631), (3839, 5187), (4389, 4537)]