21032316940

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{324673}}^1$

素因数の和:324802

約数の個数: 48

約数和(自身を含む): 45817994880

約数和(自身を除く): 24785677940

約数列:

[1, 2, 4, 5, 10, 20, 41, 79, 82, 158, 164, 205, 316, 395, 410, 790, 820, 1580, 3239, 6478, 12956, 16195, 32390, 64780, 324673, 649346, 1298692, 1623365, 3246730, 6493460, 13311593, 25649167, 26623186, 51298334, 53246372, 66557965, 102596668, 128245835, 133115930, 256491670, 266231860, 512983340, 1051615847, 2103231694, 4206463388, 5258079235, 10516158470, 21032316940]

約数ペア:

[(1, 21032316940), (2, 10516158470), (4, 5258079235), (5, 4206463388), (10, 2103231694), (20, 1051615847), (41, 512983340), (79, 266231860), (82, 256491670), (158, 133115930), (164, 128245835), (205, 102596668), (316, 66557965), (395, 53246372), (410, 51298334), (790, 26623186), (820, 25649167), (1580, 13311593), (3239, 6493460), (6478, 3246730), (12956, 1623365), (16195, 1298692), (32390, 649346), (64780, 324673)]