21864668

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{563}}^1$

素因数の和:666

約数の個数: 48

約数和(自身を含む): 46744320

約数和(自身を除く): 24879652

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 73, 76, 133, 146, 266, 292, 511, 532, 563, 1022, 1126, 1387, 2044, 2252, 2774, 3941, 5548, 7882, 9709, 10697, 15764, 19418, 21394, 38836, 41099, 42788, 74879, 82198, 149758, 164396, 287693, 299516, 575386, 780881, 1150772, 1561762, 3123524, 5466167, 10932334, 21864668]

約数ペア:

[(1, 21864668), (2, 10932334), (4, 5466167), (7, 3123524), (14, 1561762), (19, 1150772), (28, 780881), (38, 575386), (73, 299516), (76, 287693), (133, 164396), (146, 149758), (266, 82198), (292, 74879), (511, 42788), (532, 41099), (563, 38836), (1022, 21394), (1126, 19418), (1387, 15764), (2044, 10697), (2252, 9709), (2774, 7882), (3941, 5548)]