19793380

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{263}}^1$

素因数の和:396

約数の個数: 48

約数和(自身を含む): 43110144

約数和(自身を除く): 23316764

約数列:

[1, 2, 4, 5, 10, 20, 53, 71, 106, 142, 212, 263, 265, 284, 355, 526, 530, 710, 1052, 1060, 1315, 1420, 2630, 3763, 5260, 7526, 13939, 15052, 18673, 18815, 27878, 37346, 37630, 55756, 69695, 74692, 75260, 93365, 139390, 186730, 278780, 373460, 989669, 1979338, 3958676, 4948345, 9896690, 19793380]

約数ペア:

[(1, 19793380), (2, 9896690), (4, 4948345), (5, 3958676), (10, 1979338), (20, 989669), (53, 373460), (71, 278780), (106, 186730), (142, 139390), (212, 93365), (263, 75260), (265, 74692), (284, 69695), (355, 55756), (526, 37630), (530, 37346), (710, 27878), (1052, 18815), (1060, 18673), (1315, 15052), (1420, 13939), (2630, 7526), (3763, 5260)]