2489000

素因数分解:

$2^3\times 5^3\times {\mathrm{19}}^1\times {\mathrm{131}}^1$

素因数の和:171

約数の個数: 64

約数和(自身を含む): 6177600

約数和(自身を除く): 3688600

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 125, 131, 152, 190, 200, 250, 262, 380, 475, 500, 524, 655, 760, 950, 1000, 1048, 1310, 1900, 2375, 2489, 2620, 3275, 3800, 4750, 4978, 5240, 6550, 9500, 9956, 12445, 13100, 16375, 19000, 19912, 24890, 26200, 32750, 49780, 62225, 65500, 99560, 124450, 131000, 248900, 311125, 497800, 622250, 1244500, 2489000]

約数ペア:

[(1, 2489000), (2, 1244500), (4, 622250), (5, 497800), (8, 311125), (10, 248900), (19, 131000), (20, 124450), (25, 99560), (38, 65500), (40, 62225), (50, 49780), (76, 32750), (95, 26200), (100, 24890), (125, 19912), (131, 19000), (152, 16375), (190, 13100), (200, 12445), (250, 9956), (262, 9500), (380, 6550), (475, 5240), (500, 4978), (524, 4750), (655, 3800), (760, 3275), (950, 2620), (1000, 2489), (1048, 2375), (1310, 1900)]