640902120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{1021}}^1\times {\mathrm{5231}}^1$

素因数の和:6266

約数の個数: 64

約数和(自身を含む): 1924957440

約数和(自身を除く): 1284055320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 1021, 2042, 3063, 4084, 5105, 5231, 6126, 8168, 10210, 10462, 12252, 15315, 15693, 20420, 20924, 24504, 26155, 30630, 31386, 40840, 41848, 52310, 61260, 62772, 78465, 104620, 122520, 125544, 156930, 209240, 313860, 627720, 5340851, 10681702, 16022553, 21363404, 26704255, 32045106, 42726808, 53408510, 64090212, 80112765, 106817020, 128180424, 160225530, 213634040, 320451060, 640902120]

約数ペア:

[(1, 640902120), (2, 320451060), (3, 213634040), (4, 160225530), (5, 128180424), (6, 106817020), (8, 80112765), (10, 64090212), (12, 53408510), (15, 42726808), (20, 32045106), (24, 26704255), (30, 21363404), (40, 16022553), (60, 10681702), (120, 5340851), (1021, 627720), (2042, 313860), (3063, 209240), (4084, 156930), (5105, 125544), (5231, 122520), (6126, 104620), (8168, 78465), (10210, 62772), (10462, 61260), (12252, 52310), (15315, 41848), (15693, 40840), (20420, 31386), (20924, 30630), (24504, 26155)]