8270920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{271}}^1$

素因数の和:398

約数の個数: 64

約数和(自身を含む): 21542400

約数和(自身を除く): 13271480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 109, 140, 218, 271, 280, 436, 542, 545, 763, 872, 1084, 1090, 1355, 1526, 1897, 2168, 2180, 2710, 3052, 3794, 3815, 4360, 5420, 6104, 7588, 7630, 9485, 10840, 15176, 15260, 18970, 29539, 30520, 37940, 59078, 75880, 118156, 147695, 206773, 236312, 295390, 413546, 590780, 827092, 1033865, 1181560, 1654184, 2067730, 4135460, 8270920]

約数ペア:

[(1, 8270920), (2, 4135460), (4, 2067730), (5, 1654184), (7, 1181560), (8, 1033865), (10, 827092), (14, 590780), (20, 413546), (28, 295390), (35, 236312), (40, 206773), (56, 147695), (70, 118156), (109, 75880), (140, 59078), (218, 37940), (271, 30520), (280, 29539), (436, 18970), (542, 15260), (545, 15176), (763, 10840), (872, 9485), (1084, 7630), (1090, 7588), (1355, 6104), (1526, 5420), (1897, 4360), (2168, 3815), (2180, 3794), (2710, 3052)]