72513040

素因数分解:

$2^4\times 5^1\times {\mathrm{421}}^1\times {\mathrm{2153}}^1$

素因数の和:2587

約数の個数: 40

約数和(自身を含む): 169071768

約数和(自身を除く): 96558728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 421, 842, 1684, 2105, 2153, 3368, 4210, 4306, 6736, 8420, 8612, 10765, 16840, 17224, 21530, 33680, 34448, 43060, 86120, 172240, 906413, 1812826, 3625652, 4532065, 7251304, 9064130, 14502608, 18128260, 36256520, 72513040]

約数ペア:

[(1, 72513040), (2, 36256520), (4, 18128260), (5, 14502608), (8, 9064130), (10, 7251304), (16, 4532065), (20, 3625652), (40, 1812826), (80, 906413), (421, 172240), (842, 86120), (1684, 43060), (2105, 34448), (2153, 33680), (3368, 21530), (4210, 17224), (4306, 16840), (6736, 10765), (8420, 8612)]