21494440920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{439}}^1\times {\mathrm{408019}}^1$

素因数の和:408472

約数の個数: 64

約数和(自身を含む): 64630368000

約数和(自身を除く): 43135927080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 439, 878, 1317, 1756, 2195, 2634, 3512, 4390, 5268, 6585, 8780, 10536, 13170, 17560, 26340, 52680, 408019, 816038, 1224057, 1632076, 2040095, 2448114, 3264152, 4080190, 4896228, 6120285, 8160380, 9792456, 12240570, 16320760, 24481140, 48962280, 179120341, 358240682, 537361023, 716481364, 895601705, 1074722046, 1432962728, 1791203410, 2149444092, 2686805115, 3582406820, 4298888184, 5373610230, 7164813640, 10747220460, 21494440920]

約数ペア:

[(1, 21494440920), (2, 10747220460), (3, 7164813640), (4, 5373610230), (5, 4298888184), (6, 3582406820), (8, 2686805115), (10, 2149444092), (12, 1791203410), (15, 1432962728), (20, 1074722046), (24, 895601705), (30, 716481364), (40, 537361023), (60, 358240682), (120, 179120341), (439, 48962280), (878, 24481140), (1317, 16320760), (1756, 12240570), (2195, 9792456), (2634, 8160380), (3512, 6120285), (4390, 4896228), (5268, 4080190), (6585, 3264152), (8780, 2448114), (10536, 2040095), (13170, 1632076), (17560, 1224057), (26340, 816038), (52680, 408019)]