20838580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{2039}}^1$

素因数の和:2128

約数の個数: 48

約数和(自身を含む): 50722560

約数和(自身を除く): 29883980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 73, 140, 146, 292, 365, 511, 730, 1022, 1460, 2039, 2044, 2555, 4078, 5110, 8156, 10195, 10220, 14273, 20390, 28546, 40780, 57092, 71365, 142730, 148847, 285460, 297694, 595388, 744235, 1041929, 1488470, 2083858, 2976940, 4167716, 5209645, 10419290, 20838580]

約数ペア:

[(1, 20838580), (2, 10419290), (4, 5209645), (5, 4167716), (7, 2976940), (10, 2083858), (14, 1488470), (20, 1041929), (28, 744235), (35, 595388), (70, 297694), (73, 285460), (140, 148847), (146, 142730), (292, 71365), (365, 57092), (511, 40780), (730, 28546), (1022, 20390), (1460, 14273), (2039, 10220), (2044, 10195), (2555, 8156), (4078, 5110)]