20891830

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{3547}}^1$

素因数の和:3604

約数の個数: 32

約数和(自身を含む): 40872960

約数和(自身を除く): 19981130

約数列:

[1, 2, 5, 10, 19, 31, 38, 62, 95, 155, 190, 310, 589, 1178, 2945, 3547, 5890, 7094, 17735, 35470, 67393, 109957, 134786, 219914, 336965, 549785, 673930, 1099570, 2089183, 4178366, 10445915, 20891830]

約数ペア:

[(1, 20891830), (2, 10445915), (5, 4178366), (10, 2089183), (19, 1099570), (31, 673930), (38, 549785), (62, 336965), (95, 219914), (155, 134786), (190, 109957), (310, 67393), (589, 35470), (1178, 17735), (2945, 7094), (3547, 5890)]