129123580

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{971}}^1$

素因数の和:1150

約数の個数: 48

約数和(自身を含む): 278419680

約数和(自身を除く): 149296100

約数列:

[1, 2, 4, 5, 10, 20, 61, 109, 122, 218, 244, 305, 436, 545, 610, 971, 1090, 1220, 1942, 2180, 3884, 4855, 6649, 9710, 13298, 19420, 26596, 33245, 59231, 66490, 105839, 118462, 132980, 211678, 236924, 296155, 423356, 529195, 592310, 1058390, 1184620, 2116780, 6456179, 12912358, 25824716, 32280895, 64561790, 129123580]

約数ペア:

[(1, 129123580), (2, 64561790), (4, 32280895), (5, 25824716), (10, 12912358), (20, 6456179), (61, 2116780), (109, 1184620), (122, 1058390), (218, 592310), (244, 529195), (305, 423356), (436, 296155), (545, 236924), (610, 211678), (971, 132980), (1090, 118462), (1220, 105839), (1942, 66490), (2180, 59231), (3884, 33245), (4855, 26596), (6649, 19420), (9710, 13298)]