248839640

素因数分解:

$2^3\times 5^1\times 7^4\times {\mathrm{2591}}^1$

素因数の和:2630

約数の個数: 80

約数和(自身を含む): 653417280

約数和(自身を除く): 404577640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 343, 392, 490, 686, 980, 1372, 1715, 1960, 2401, 2591, 2744, 3430, 4802, 5182, 6860, 9604, 10364, 12005, 12955, 13720, 18137, 19208, 20728, 24010, 25910, 36274, 48020, 51820, 72548, 90685, 96040, 103640, 126959, 145096, 181370, 253918, 362740, 507836, 634795, 725480, 888713, 1015672, 1269590, 1777426, 2539180, 3554852, 4443565, 5078360, 6220991, 7109704, 8887130, 12441982, 17774260, 24883964, 31104955, 35548520, 49767928, 62209910, 124419820, 248839640]

約数ペア:

[(1, 248839640), (2, 124419820), (4, 62209910), (5, 49767928), (7, 35548520), (8, 31104955), (10, 24883964), (14, 17774260), (20, 12441982), (28, 8887130), (35, 7109704), (40, 6220991), (49, 5078360), (56, 4443565), (70, 3554852), (98, 2539180), (140, 1777426), (196, 1269590), (245, 1015672), (280, 888713), (343, 725480), (392, 634795), (490, 507836), (686, 362740), (980, 253918), (1372, 181370), (1715, 145096), (1960, 126959), (2401, 103640), (2591, 96040), (2744, 90685), (3430, 72548), (4802, 51820), (5182, 48020), (6860, 36274), (9604, 25910), (10364, 24010), (12005, 20728), (12955, 19208), (13720, 18137)]