8320540

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 18275040

約数和(自身を除く): 9954500

約数列:

[1, 2, 4, 5, 10, 20, 41, 73, 82, 139, 146, 164, 205, 278, 292, 365, 410, 556, 695, 730, 820, 1390, 1460, 2780, 2993, 5699, 5986, 10147, 11398, 11972, 14965, 20294, 22796, 28495, 29930, 40588, 50735, 56990, 59860, 101470, 113980, 202940, 416027, 832054, 1664108, 2080135, 4160270, 8320540]

約数ペア:

[(1, 8320540), (2, 4160270), (4, 2080135), (5, 1664108), (10, 832054), (20, 416027), (41, 202940), (73, 113980), (82, 101470), (139, 59860), (146, 56990), (164, 50735), (205, 40588), (278, 29930), (292, 28495), (365, 22796), (410, 20294), (556, 14965), (695, 11972), (730, 11398), (820, 10147), (1390, 5986), (1460, 5699), (2780, 2993)]