21138205936

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{413243}}^1$

素因数の和:413413

約数の個数: 40

約数和(自身を含む): 43043495040

約数和(自身を除く): 21905289104

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 139, 184, 278, 368, 556, 1112, 2224, 3197, 6394, 12788, 25576, 51152, 413243, 826486, 1652972, 3305944, 6611888, 9504589, 19009178, 38018356, 57440777, 76036712, 114881554, 152073424, 229763108, 459526216, 919052432, 1321137871, 2642275742, 5284551484, 10569102968, 21138205936]

約数ペア:

[(1, 21138205936), (2, 10569102968), (4, 5284551484), (8, 2642275742), (16, 1321137871), (23, 919052432), (46, 459526216), (92, 229763108), (139, 152073424), (184, 114881554), (278, 76036712), (368, 57440777), (556, 38018356), (1112, 19009178), (2224, 9504589), (3197, 6611888), (6394, 3305944), (12788, 1652972), (25576, 826486), (51152, 413243)]