79440140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{1237}}^1$

素因数の和:1291

約数の個数: 72

約数和(自身を含む): 190305360

約数和(自身を除く): 110865220

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 169, 190, 247, 260, 338, 380, 494, 676, 845, 988, 1235, 1237, 1690, 2470, 2474, 3211, 3380, 4940, 4948, 6185, 6422, 12370, 12844, 16055, 16081, 23503, 24740, 32110, 32162, 47006, 64220, 64324, 80405, 94012, 117515, 160810, 209053, 235030, 305539, 321620, 418106, 470060, 611078, 836212, 1045265, 1222156, 1527695, 2090530, 3055390, 3972007, 4181060, 6110780, 7944014, 15888028, 19860035, 39720070, 79440140]

約数ペア:

[(1, 79440140), (2, 39720070), (4, 19860035), (5, 15888028), (10, 7944014), (13, 6110780), (19, 4181060), (20, 3972007), (26, 3055390), (38, 2090530), (52, 1527695), (65, 1222156), (76, 1045265), (95, 836212), (130, 611078), (169, 470060), (190, 418106), (247, 321620), (260, 305539), (338, 235030), (380, 209053), (494, 160810), (676, 117515), (845, 94012), (988, 80405), (1235, 64324), (1237, 64220), (1690, 47006), (2470, 32162), (2474, 32110), (3211, 24740), (3380, 23503), (4940, 16081), (4948, 16055), (6185, 12844), (6422, 12370)]