69891980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{811}}^1$

素因数の和:990

約数の個数: 48

約数和(自身を含む): 152785920

約数和(自身を除く): 82893940

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 139, 155, 278, 310, 556, 620, 695, 811, 1390, 1622, 2780, 3244, 4055, 4309, 8110, 8618, 16220, 17236, 21545, 25141, 43090, 50282, 86180, 100564, 112729, 125705, 225458, 251410, 450916, 502820, 563645, 1127290, 2254580, 3494599, 6989198, 13978396, 17472995, 34945990, 69891980]

約数ペア:

[(1, 69891980), (2, 34945990), (4, 17472995), (5, 13978396), (10, 6989198), (20, 3494599), (31, 2254580), (62, 1127290), (124, 563645), (139, 502820), (155, 450916), (278, 251410), (310, 225458), (556, 125705), (620, 112729), (695, 100564), (811, 86180), (1390, 50282), (1622, 43090), (2780, 25141), (3244, 21545), (4055, 17236), (4309, 16220), (8110, 8618)]