20793557980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1095551}}^1$

素因数の和:1095646

約数の個数: 48

約数和(自身を含む): 47669658624

約数和(自身を除く): 26876100644

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 73, 130, 146, 260, 292, 365, 730, 949, 1460, 1898, 3796, 4745, 9490, 18980, 1095551, 2191102, 4382204, 5477755, 10955510, 14242163, 21911020, 28484326, 56968652, 71210815, 79975223, 142421630, 159950446, 284843260, 319900892, 399876115, 799752230, 1039677899, 1599504460, 2079355798, 4158711596, 5198389495, 10396778990, 20793557980]

約数ペア:

[(1, 20793557980), (2, 10396778990), (4, 5198389495), (5, 4158711596), (10, 2079355798), (13, 1599504460), (20, 1039677899), (26, 799752230), (52, 399876115), (65, 319900892), (73, 284843260), (130, 159950446), (146, 142421630), (260, 79975223), (292, 71210815), (365, 56968652), (730, 28484326), (949, 21911020), (1460, 14242163), (1898, 10955510), (3796, 5477755), (4745, 4382204), (9490, 2191102), (18980, 1095551)]