664405520

素因数分解:

$2^4\times 5^1\times {\mathrm{2539}}^1\times {\mathrm{3271}}^1$

素因数の和:5823

約数の個数: 40

約数和(自身を含む): 1545823680

約数和(自身を除く): 881418160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2539, 3271, 5078, 6542, 10156, 12695, 13084, 16355, 20312, 25390, 26168, 32710, 40624, 50780, 52336, 65420, 101560, 130840, 203120, 261680, 8305069, 16610138, 33220276, 41525345, 66440552, 83050690, 132881104, 166101380, 332202760, 664405520]

約数ペア:

[(1, 664405520), (2, 332202760), (4, 166101380), (5, 132881104), (8, 83050690), (10, 66440552), (16, 41525345), (20, 33220276), (40, 16610138), (80, 8305069), (2539, 261680), (3271, 203120), (5078, 130840), (6542, 101560), (10156, 65420), (12695, 52336), (13084, 50780), (16355, 40624), (20312, 32710), (25390, 26168)]