21380472

素因数分解:

$2^3\times 3^2\times {\mathrm{19}}^1\times {\mathrm{15629}}^1$

素因数の和:15660

約数の個数: 48

約数和(自身を含む): 60957000

約数和(自身を除く): 39576528

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 19, 24, 36, 38, 57, 72, 76, 114, 152, 171, 228, 342, 456, 684, 1368, 15629, 31258, 46887, 62516, 93774, 125032, 140661, 187548, 281322, 296951, 375096, 562644, 593902, 890853, 1125288, 1187804, 1781706, 2375608, 2672559, 3563412, 5345118, 7126824, 10690236, 21380472]

約数ペア:

[(1, 21380472), (2, 10690236), (3, 7126824), (4, 5345118), (6, 3563412), (8, 2672559), (9, 2375608), (12, 1781706), (18, 1187804), (19, 1125288), (24, 890853), (36, 593902), (38, 562644), (57, 375096), (72, 296951), (76, 281322), (114, 187548), (152, 140661), (171, 125032), (228, 93774), (342, 62516), (456, 46887), (684, 31258), (1368, 15629)]