21724020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{120689}}^1$

素因数の和:120704

約数の個数: 36

約数和(自身を含む): 65896740

約数和(自身を除く): 44172720

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 120689, 241378, 362067, 482756, 603445, 724134, 1086201, 1206890, 1448268, 1810335, 2172402, 2413780, 3620670, 4344804, 5431005, 7241340, 10862010, 21724020]

約数ペア:

[(1, 21724020), (2, 10862010), (3, 7241340), (4, 5431005), (5, 4344804), (6, 3620670), (9, 2413780), (10, 2172402), (12, 1810335), (15, 1448268), (18, 1206890), (20, 1086201), (30, 724134), (36, 603445), (45, 482756), (60, 362067), (90, 241378), (180, 120689)]