66556880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{63997}}^1$

素因数の和:64023

約数の個数: 40

約数和(自身を含む): 166650792

約数和(自身を除く): 100093912

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 63997, 127994, 255988, 319985, 511976, 639970, 831961, 1023952, 1279940, 1663922, 2559880, 3327844, 4159805, 5119760, 6655688, 8319610, 13311376, 16639220, 33278440, 66556880]

約数ペア:

[(1, 66556880), (2, 33278440), (4, 16639220), (5, 13311376), (8, 8319610), (10, 6655688), (13, 5119760), (16, 4159805), (20, 3327844), (26, 2559880), (40, 1663922), (52, 1279940), (65, 1023952), (80, 831961), (104, 639970), (130, 511976), (208, 319985), (260, 255988), (520, 127994), (1040, 63997)]