86978000

素因数分解:

$2^4\times 5^3\times {\mathrm{157}}^1\times {\mathrm{277}}^1$

素因数の和:457

約数の個数: 80

約数和(自身を含む): 212416464

約数和(自身を除く): 125438464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 157, 200, 250, 277, 314, 400, 500, 554, 628, 785, 1000, 1108, 1256, 1385, 1570, 2000, 2216, 2512, 2770, 3140, 3925, 4432, 5540, 6280, 6925, 7850, 11080, 12560, 13850, 15700, 19625, 22160, 27700, 31400, 34625, 39250, 43489, 55400, 62800, 69250, 78500, 86978, 110800, 138500, 157000, 173956, 217445, 277000, 314000, 347912, 434890, 554000, 695824, 869780, 1087225, 1739560, 2174450, 3479120, 4348900, 5436125, 8697800, 10872250, 17395600, 21744500, 43489000, 86978000]

約数ペア:

[(1, 86978000), (2, 43489000), (4, 21744500), (5, 17395600), (8, 10872250), (10, 8697800), (16, 5436125), (20, 4348900), (25, 3479120), (40, 2174450), (50, 1739560), (80, 1087225), (100, 869780), (125, 695824), (157, 554000), (200, 434890), (250, 347912), (277, 314000), (314, 277000), (400, 217445), (500, 173956), (554, 157000), (628, 138500), (785, 110800), (1000, 86978), (1108, 78500), (1256, 69250), (1385, 62800), (1570, 55400), (2000, 43489), (2216, 39250), (2512, 34625), (2770, 31400), (3140, 27700), (3925, 22160), (4432, 19625), (5540, 15700), (6280, 13850), (6925, 12560), (7850, 11080)]