21057990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{22643}}^1$

素因数の和:22684

約数の個数: 32

約数和(自身を含む): 52171776

約数和(自身を除く): 31113786

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 62, 93, 155, 186, 310, 465, 930, 22643, 45286, 67929, 113215, 135858, 226430, 339645, 679290, 701933, 1403866, 2105799, 3509665, 4211598, 7019330, 10528995, 21057990]

約数ペア:

[(1, 21057990), (2, 10528995), (3, 7019330), (5, 4211598), (6, 3509665), (10, 2105799), (15, 1403866), (30, 701933), (31, 679290), (62, 339645), (93, 226430), (155, 135858), (186, 113215), (310, 67929), (465, 45286), (930, 22643)]