78128440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{150247}}^1$

素因数の和:150271

約数の個数: 32

約数和(自身を含む): 189312480

約数和(自身を除く): 111184040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 150247, 300494, 600988, 751235, 1201976, 1502470, 1953211, 3004940, 3906422, 6009880, 7812844, 9766055, 15625688, 19532110, 39064220, 78128440]

約数ペア:

[(1, 78128440), (2, 39064220), (4, 19532110), (5, 15625688), (8, 9766055), (10, 7812844), (13, 6009880), (20, 3906422), (26, 3004940), (40, 1953211), (52, 1502470), (65, 1201976), (104, 751235), (130, 600988), (260, 300494), (520, 150247)]