19130320

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{21739}}^1$

素因数の和:21763

約数の個数: 40

約数和(自身を含む): 48523680

約数和(自身を除く): 29393360

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 21739, 43478, 86956, 108695, 173912, 217390, 239129, 347824, 434780, 478258, 869560, 956516, 1195645, 1739120, 1913032, 2391290, 3826064, 4782580, 9565160, 19130320]

約数ペア:

[(1, 19130320), (2, 9565160), (4, 4782580), (5, 3826064), (8, 2391290), (10, 1913032), (11, 1739120), (16, 1195645), (20, 956516), (22, 869560), (40, 478258), (44, 434780), (55, 347824), (80, 239129), (88, 217390), (110, 173912), (176, 108695), (220, 86956), (440, 43478), (880, 21739)]