210320

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1$

素因数の和:263

約数の個数: 40

約数和(自身を含む): 535680

約数和(自身を除く): 325360

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 239, 440, 478, 880, 956, 1195, 1912, 2390, 2629, 3824, 4780, 5258, 9560, 10516, 13145, 19120, 21032, 26290, 42064, 52580, 105160, 210320]

約数ペア:

[(1, 210320), (2, 105160), (4, 52580), (5, 42064), (8, 26290), (10, 21032), (11, 19120), (16, 13145), (20, 10516), (22, 9560), (40, 5258), (44, 4780), (55, 3824), (80, 2629), (88, 2390), (110, 1912), (176, 1195), (220, 956), (239, 880), (440, 478)]