1821301900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{401}}^1\times {\mathrm{4129}}^1$

素因数の和:4555

約数の個数: 72

約数和(自身を含む): 4323317040

約数和(自身を除く): 2502015140

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 401, 550, 802, 1100, 1604, 2005, 4010, 4129, 4411, 8020, 8258, 8822, 10025, 16516, 17644, 20050, 20645, 22055, 40100, 41290, 44110, 45419, 82580, 88220, 90838, 103225, 110275, 181676, 206450, 220550, 227095, 412900, 441100, 454190, 908380, 1135475, 1655729, 2270950, 3311458, 4541900, 6622916, 8278645, 16557290, 18213019, 33114580, 36426038, 41393225, 72852076, 82786450, 91065095, 165572900, 182130190, 364260380, 455325475, 910650950, 1821301900]

約数ペア:

[(1, 1821301900), (2, 910650950), (4, 455325475), (5, 364260380), (10, 182130190), (11, 165572900), (20, 91065095), (22, 82786450), (25, 72852076), (44, 41393225), (50, 36426038), (55, 33114580), (100, 18213019), (110, 16557290), (220, 8278645), (275, 6622916), (401, 4541900), (550, 3311458), (802, 2270950), (1100, 1655729), (1604, 1135475), (2005, 908380), (4010, 454190), (4129, 441100), (4411, 412900), (8020, 227095), (8258, 220550), (8822, 206450), (10025, 181676), (16516, 110275), (17644, 103225), (20050, 90838), (20645, 88220), (22055, 82580), (40100, 45419), (41290, 44110)]