21805830

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{3319}}^1$

素因数の和:3405

約数の個数: 48

約数和(自身を含む): 57489120

約数和(自身を除く): 35683290

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 73, 90, 146, 219, 365, 438, 657, 730, 1095, 1314, 2190, 3285, 3319, 6570, 6638, 9957, 16595, 19914, 29871, 33190, 49785, 59742, 99570, 149355, 242287, 298710, 484574, 726861, 1211435, 1453722, 2180583, 2422870, 3634305, 4361166, 7268610, 10902915, 21805830]

約数ペア:

[(1, 21805830), (2, 10902915), (3, 7268610), (5, 4361166), (6, 3634305), (9, 2422870), (10, 2180583), (15, 1453722), (18, 1211435), (30, 726861), (45, 484574), (73, 298710), (90, 242287), (146, 149355), (219, 99570), (365, 59742), (438, 49785), (657, 33190), (730, 29871), (1095, 19914), (1314, 16595), (2190, 9957), (3285, 6638), (3319, 6570)]