19311380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1439}}^1$

素因数の和:1520

約数の個数: 48

約数和(自身を含む): 44997120

約数和(自身を除く): 25685740

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 61, 110, 122, 220, 244, 305, 610, 671, 1220, 1342, 1439, 2684, 2878, 3355, 5756, 6710, 7195, 13420, 14390, 15829, 28780, 31658, 63316, 79145, 87779, 158290, 175558, 316580, 351116, 438895, 877790, 965569, 1755580, 1931138, 3862276, 4827845, 9655690, 19311380]

約数ペア:

[(1, 19311380), (2, 9655690), (4, 4827845), (5, 3862276), (10, 1931138), (11, 1755580), (20, 965569), (22, 877790), (44, 438895), (55, 351116), (61, 316580), (110, 175558), (122, 158290), (220, 87779), (244, 79145), (305, 63316), (610, 31658), (671, 28780), (1220, 15829), (1342, 14390), (1439, 13420), (2684, 7195), (2878, 6710), (3355, 5756)]