78782940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{997}}^1$

素因数の和:1451

約数の個数: 72

約数和(自身を含む): 239759520

約数和(自身を除く): 160976580

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 439, 878, 997, 1317, 1756, 1994, 2195, 2634, 2991, 3951, 3988, 4390, 4985, 5268, 5982, 6585, 7902, 8780, 8973, 9970, 11964, 13170, 14955, 15804, 17946, 19755, 19940, 26340, 29910, 35892, 39510, 44865, 59820, 79020, 89730, 179460, 437683, 875366, 1313049, 1750732, 2188415, 2626098, 3939147, 4376830, 5252196, 6565245, 7878294, 8753660, 13130490, 15756588, 19695735, 26260980, 39391470, 78782940]

約数ペア:

[(1, 78782940), (2, 39391470), (3, 26260980), (4, 19695735), (5, 15756588), (6, 13130490), (9, 8753660), (10, 7878294), (12, 6565245), (15, 5252196), (18, 4376830), (20, 3939147), (30, 2626098), (36, 2188415), (45, 1750732), (60, 1313049), (90, 875366), (180, 437683), (439, 179460), (878, 89730), (997, 79020), (1317, 59820), (1756, 44865), (1994, 39510), (2195, 35892), (2634, 29910), (2991, 26340), (3951, 19940), (3988, 19755), (4390, 17946), (4985, 15804), (5268, 14955), (5982, 13170), (6585, 11964), (7902, 9970), (8780, 8973)]