21943120

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{2663}}^1$

素因数の和:2779

約数の個数: 40

約数和(自身を含む): 51532416

約数和(自身を除く): 29589296

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 206, 412, 515, 824, 1030, 1648, 2060, 2663, 4120, 5326, 8240, 10652, 13315, 21304, 26630, 42608, 53260, 106520, 213040, 274289, 548578, 1097156, 1371445, 2194312, 2742890, 4388624, 5485780, 10971560, 21943120]

約数ペア:

[(1, 21943120), (2, 10971560), (4, 5485780), (5, 4388624), (8, 2742890), (10, 2194312), (16, 1371445), (20, 1097156), (40, 548578), (80, 274289), (103, 213040), (206, 106520), (412, 53260), (515, 42608), (824, 26630), (1030, 21304), (1648, 13315), (2060, 10652), (2663, 8240), (4120, 5326)]