78791720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{641}}^1$

素因数の和:1098

約数の個数: 64

約数和(自身を含む): 203385600

約数和(自身を除く): 124593880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 439, 641, 878, 1282, 1756, 2195, 2564, 3073, 3205, 3512, 4390, 4487, 5128, 6146, 6410, 8780, 8974, 12292, 12820, 15365, 17560, 17948, 22435, 24584, 25640, 30730, 35896, 44870, 61460, 89740, 122920, 179480, 281399, 562798, 1125596, 1406995, 1969793, 2251192, 2813990, 3939586, 5627980, 7879172, 9848965, 11255960, 15758344, 19697930, 39395860, 78791720]

約数ペア:

[(1, 78791720), (2, 39395860), (4, 19697930), (5, 15758344), (7, 11255960), (8, 9848965), (10, 7879172), (14, 5627980), (20, 3939586), (28, 2813990), (35, 2251192), (40, 1969793), (56, 1406995), (70, 1125596), (140, 562798), (280, 281399), (439, 179480), (641, 122920), (878, 89740), (1282, 61460), (1756, 44870), (2195, 35896), (2564, 30730), (3073, 25640), (3205, 24584), (3512, 22435), (4390, 17948), (4487, 17560), (5128, 15365), (6146, 12820), (6410, 12292), (8780, 8974)]