21758420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{57259}}^1$

素因数の和:57287

約数の個数: 24

約数和(自身を含む): 48098400

約数和(自身を除く): 26339980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 57259, 114518, 229036, 286295, 572590, 1087921, 1145180, 2175842, 4351684, 5439605, 10879210, 21758420]

約数ペア:

[(1, 21758420), (2, 10879210), (4, 5439605), (5, 4351684), (10, 2175842), (19, 1145180), (20, 1087921), (38, 572590), (76, 286295), (95, 229036), (190, 114518), (380, 57259)]