31450120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1951}}^1$

素因数の和:2006

約数の個数: 64

約数和(自身を含む): 78704640

約数和(自身を除く): 47254520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1240, 1612, 1951, 2015, 3224, 3902, 4030, 7804, 8060, 9755, 15608, 16120, 19510, 25363, 39020, 50726, 60481, 78040, 101452, 120962, 126815, 202904, 241924, 253630, 302405, 483848, 507260, 604810, 786253, 1014520, 1209620, 1572506, 2419240, 3145012, 3931265, 6290024, 7862530, 15725060, 31450120]

約数ペア:

[(1, 31450120), (2, 15725060), (4, 7862530), (5, 6290024), (8, 3931265), (10, 3145012), (13, 2419240), (20, 1572506), (26, 1209620), (31, 1014520), (40, 786253), (52, 604810), (62, 507260), (65, 483848), (104, 302405), (124, 253630), (130, 241924), (155, 202904), (248, 126815), (260, 120962), (310, 101452), (403, 78040), (520, 60481), (620, 50726), (806, 39020), (1240, 25363), (1612, 19510), (1951, 16120), (2015, 15608), (3224, 9755), (3902, 8060), (4030, 7804)]