19420401

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{223}}^1$

素因数の和:286

約数の個数: 64

約数和(自身を含む): 36126720

約数和(自身を除く): 16706319

約数列:

[1, 3, 7, 11, 13, 21, 29, 33, 39, 77, 87, 91, 143, 203, 223, 231, 273, 319, 377, 429, 609, 669, 957, 1001, 1131, 1561, 2233, 2453, 2639, 2899, 3003, 4147, 4683, 6467, 6699, 7359, 7917, 8697, 12441, 17171, 19401, 20293, 29029, 31889, 45269, 51513, 60879, 71137, 84071, 87087, 95667, 135807, 213411, 223223, 252213, 497959, 588497, 669669, 924781, 1493877, 1765491, 2774343, 6473467, 19420401]

約数ペア:

[(1, 19420401), (3, 6473467), (7, 2774343), (11, 1765491), (13, 1493877), (21, 924781), (29, 669669), (33, 588497), (39, 497959), (77, 252213), (87, 223223), (91, 213411), (143, 135807), (203, 95667), (223, 87087), (231, 84071), (273, 71137), (319, 60879), (377, 51513), (429, 45269), (609, 31889), (669, 29029), (957, 20293), (1001, 19401), (1131, 17171), (1561, 12441), (2233, 8697), (2453, 7917), (2639, 7359), (2899, 6699), (3003, 6467), (4147, 4683)]