21001384

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{4457}}^1$

素因数の和:4513

約数の個数: 32

約数和(自身を含む): 42796800

約数和(自身を除く): 21795416

約数列:

[1, 2, 4, 8, 19, 31, 38, 62, 76, 124, 152, 248, 589, 1178, 2356, 4457, 4712, 8914, 17828, 35656, 84683, 138167, 169366, 276334, 338732, 552668, 677464, 1105336, 2625173, 5250346, 10500692, 21001384]

約数ペア:

[(1, 21001384), (2, 10500692), (4, 5250346), (8, 2625173), (19, 1105336), (31, 677464), (38, 552668), (62, 338732), (76, 276334), (124, 169366), (152, 138167), (248, 84683), (589, 35656), (1178, 17828), (2356, 8914), (4457, 4712)]