12920229440

素因数分解:

$2^6\times 5^1\times {\mathrm{61}}^1\times {\mathrm{661897}}^1$

素因数の和:661975

約数の個数: 56

約数和(自身を含む): 31270709112

約数和(自身を除く): 18350479672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 160, 244, 305, 320, 488, 610, 976, 1220, 1952, 2440, 3904, 4880, 9760, 19520, 661897, 1323794, 2647588, 3309485, 5295176, 6618970, 10590352, 13237940, 21180704, 26475880, 40375717, 42361408, 52951760, 80751434, 105903520, 161502868, 201878585, 211807040, 323005736, 403757170, 646011472, 807514340, 1292022944, 1615028680, 2584045888, 3230057360, 6460114720, 12920229440]

約数ペア:

[(1, 12920229440), (2, 6460114720), (4, 3230057360), (5, 2584045888), (8, 1615028680), (10, 1292022944), (16, 807514340), (20, 646011472), (32, 403757170), (40, 323005736), (61, 211807040), (64, 201878585), (80, 161502868), (122, 105903520), (160, 80751434), (244, 52951760), (305, 42361408), (320, 40375717), (488, 26475880), (610, 21180704), (976, 13237940), (1220, 10590352), (1952, 6618970), (2440, 5295176), (3904, 3309485), (4880, 2647588), (9760, 1323794), (19520, 661897)]