77681200

素因数分解:

$2^4\times 5^2\times {\mathrm{194203}}^1$

素因数の和:194221

約数の個数: 30

約数和(自身を含む): 186630044

約数和(自身を除く): 108948844

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 194203, 388406, 776812, 971015, 1553624, 1942030, 3107248, 3884060, 4855075, 7768120, 9710150, 15536240, 19420300, 38840600, 77681200]

約数ペア:

[(1, 77681200), (2, 38840600), (4, 19420300), (5, 15536240), (8, 9710150), (10, 7768120), (16, 4855075), (20, 3884060), (25, 3107248), (40, 1942030), (50, 1553624), (80, 971015), (100, 776812), (200, 388406), (400, 194203)]