128995880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{359}}^1\times {\mathrm{691}}^1$

素因数の和:1074

約数の個数: 64

約数和(自身を含む): 313891200

約数和(自身を除く): 184895320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 359, 520, 691, 718, 1382, 1436, 1795, 2764, 2872, 3455, 3590, 4667, 5528, 6910, 7180, 8983, 9334, 13820, 14360, 17966, 18668, 23335, 27640, 35932, 37336, 44915, 46670, 71864, 89830, 93340, 179660, 186680, 248069, 359320, 496138, 992276, 1240345, 1984552, 2480690, 3224897, 4961380, 6449794, 9922760, 12899588, 16124485, 25799176, 32248970, 64497940, 128995880]

約数ペア:

[(1, 128995880), (2, 64497940), (4, 32248970), (5, 25799176), (8, 16124485), (10, 12899588), (13, 9922760), (20, 6449794), (26, 4961380), (40, 3224897), (52, 2480690), (65, 1984552), (104, 1240345), (130, 992276), (260, 496138), (359, 359320), (520, 248069), (691, 186680), (718, 179660), (1382, 93340), (1436, 89830), (1795, 71864), (2764, 46670), (2872, 44915), (3455, 37336), (3590, 35932), (4667, 27640), (5528, 23335), (6910, 18668), (7180, 17966), (8983, 14360), (9334, 13820)]