20003990

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{373}}^1$

素因数の和:584

約数の個数: 32

約数和(自身を含む): 37483776

約数和(自身を除く): 17479786

約数列:

[1, 2, 5, 10, 31, 62, 155, 173, 310, 346, 373, 746, 865, 1730, 1865, 3730, 5363, 10726, 11563, 23126, 26815, 53630, 57815, 64529, 115630, 129058, 322645, 645290, 2000399, 4000798, 10001995, 20003990]

約数ペア:

[(1, 20003990), (2, 10001995), (5, 4000798), (10, 2000399), (31, 645290), (62, 322645), (155, 129058), (173, 115630), (310, 64529), (346, 57815), (373, 53630), (746, 26815), (865, 23126), (1730, 11563), (1865, 10726), (3730, 5363)]