217202320

素因数分解:

$2^4\times 5^1\times {\mathrm{421}}^1\times {\mathrm{6449}}^1$

素因数の和:6883

約数の個数: 40

約数和(自身を含む): 506273400

約数和(自身を除く): 289071080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 421, 842, 1684, 2105, 3368, 4210, 6449, 6736, 8420, 12898, 16840, 25796, 32245, 33680, 51592, 64490, 103184, 128980, 257960, 515920, 2715029, 5430058, 10860116, 13575145, 21720232, 27150290, 43440464, 54300580, 108601160, 217202320]

約数ペア:

[(1, 217202320), (2, 108601160), (4, 54300580), (5, 43440464), (8, 27150290), (10, 21720232), (16, 13575145), (20, 10860116), (40, 5430058), (80, 2715029), (421, 515920), (842, 257960), (1684, 128980), (2105, 103184), (3368, 64490), (4210, 51592), (6449, 33680), (6736, 32245), (8420, 25796), (12898, 16840)]