21487920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{89533}}^1$

素因数の和:89549

約数の個数: 40

約数和(自身を含む): 66613296

約数和(自身を除く): 45125376

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 89533, 179066, 268599, 358132, 447665, 537198, 716264, 895330, 1074396, 1342995, 1432528, 1790660, 2148792, 2685990, 3581320, 4297584, 5371980, 7162640, 10743960, 21487920]

約数ペア:

[(1, 21487920), (2, 10743960), (3, 7162640), (4, 5371980), (5, 4297584), (6, 3581320), (8, 2685990), (10, 2148792), (12, 1790660), (15, 1432528), (16, 1342995), (20, 1074396), (24, 895330), (30, 716264), (40, 537198), (48, 447665), (60, 358132), (80, 268599), (120, 179066), (240, 89533)]