21721860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{120677}}^1$

素因数の和:120692

約数の個数: 36

約数和(自身を含む): 65890188

約数和(自身を除く): 44168328

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 120677, 241354, 362031, 482708, 603385, 724062, 1086093, 1206770, 1448124, 1810155, 2172186, 2413540, 3620310, 4344372, 5430465, 7240620, 10860930, 21721860]

約数ペア:

[(1, 21721860), (2, 10860930), (3, 7240620), (4, 5430465), (5, 4344372), (6, 3620310), (9, 2413540), (10, 2172186), (12, 1810155), (15, 1448124), (18, 1206770), (20, 1086093), (30, 724062), (36, 603385), (45, 482708), (60, 362031), (90, 241354), (180, 120677)]