81952520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{359}}^1\times {\mathrm{439}}^1$

素因数の和:822

約数の個数: 64

約数和(自身を含む): 199584000

約数和(自身を除く): 117631480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 359, 439, 520, 718, 878, 1436, 1756, 1795, 2195, 2872, 3512, 3590, 4390, 4667, 5707, 7180, 8780, 9334, 11414, 14360, 17560, 18668, 22828, 23335, 28535, 37336, 45656, 46670, 57070, 93340, 114140, 157601, 186680, 228280, 315202, 630404, 788005, 1260808, 1576010, 2048813, 3152020, 4097626, 6304040, 8195252, 10244065, 16390504, 20488130, 40976260, 81952520]

約数ペア:

[(1, 81952520), (2, 40976260), (4, 20488130), (5, 16390504), (8, 10244065), (10, 8195252), (13, 6304040), (20, 4097626), (26, 3152020), (40, 2048813), (52, 1576010), (65, 1260808), (104, 788005), (130, 630404), (260, 315202), (359, 228280), (439, 186680), (520, 157601), (718, 114140), (878, 93340), (1436, 57070), (1756, 46670), (1795, 45656), (2195, 37336), (2872, 28535), (3512, 23335), (3590, 22828), (4390, 18668), (4667, 17560), (5707, 14360), (7180, 11414), (8780, 9334)]