20851390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2143}}^1$

素因数の和:2296

約数の個数: 32

約数和(自身を含む): 43223040

約数和(自身を除く): 22371650

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 139, 278, 695, 973, 1390, 1946, 2143, 4286, 4865, 9730, 10715, 15001, 21430, 30002, 75005, 150010, 297877, 595754, 1489385, 2085139, 2978770, 4170278, 10425695, 20851390]

約数ペア:

[(1, 20851390), (2, 10425695), (5, 4170278), (7, 2978770), (10, 2085139), (14, 1489385), (35, 595754), (70, 297877), (139, 150010), (278, 75005), (695, 30002), (973, 21430), (1390, 15001), (1946, 10715), (2143, 9730), (4286, 4865)]