78965720

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{32363}}^1$

素因数の和:32435

約数の個数: 32

約数和(自身を含む): 180591120

約数和(自身を除く): 101625400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 32363, 64726, 129452, 161815, 258904, 323630, 647260, 1294520, 1974143, 3948286, 7896572, 9870715, 15793144, 19741430, 39482860, 78965720]

約数ペア:

[(1, 78965720), (2, 39482860), (4, 19741430), (5, 15793144), (8, 9870715), (10, 7896572), (20, 3948286), (40, 1974143), (61, 1294520), (122, 647260), (244, 323630), (305, 258904), (488, 161815), (610, 129452), (1220, 64726), (2440, 32363)]