20756140

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{311}}^1$

素因数の和:438

約数の個数: 48

約数和(自身を含む): 45287424

約数和(自身を除く): 24531284

約数列:

[1, 2, 4, 5, 10, 20, 47, 71, 94, 142, 188, 235, 284, 311, 355, 470, 622, 710, 940, 1244, 1420, 1555, 3110, 3337, 6220, 6674, 13348, 14617, 16685, 22081, 29234, 33370, 44162, 58468, 66740, 73085, 88324, 110405, 146170, 220810, 292340, 441620, 1037807, 2075614, 4151228, 5189035, 10378070, 20756140]

約数ペア:

[(1, 20756140), (2, 10378070), (4, 5189035), (5, 4151228), (10, 2075614), (20, 1037807), (47, 441620), (71, 292340), (94, 220810), (142, 146170), (188, 110405), (235, 88324), (284, 73085), (311, 66740), (355, 58468), (470, 44162), (622, 33370), (710, 29234), (940, 22081), (1244, 16685), (1420, 14617), (1555, 13348), (3110, 6674), (3337, 6220)]