20770476688

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{916129}}^1$

素因数の和:916259

約数の個数: 40

約数和(自身を含む): 43736046200

約数和(自身を除く): 22965569512

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 109, 208, 218, 436, 872, 1417, 1744, 2834, 5668, 11336, 22672, 916129, 1832258, 3664516, 7329032, 11909677, 14658064, 23819354, 47638708, 95277416, 99858061, 190554832, 199716122, 399432244, 798864488, 1298154793, 1597728976, 2596309586, 5192619172, 10385238344, 20770476688]

約数ペア:

[(1, 20770476688), (2, 10385238344), (4, 5192619172), (8, 2596309586), (13, 1597728976), (16, 1298154793), (26, 798864488), (52, 399432244), (104, 199716122), (109, 190554832), (208, 99858061), (218, 95277416), (436, 47638708), (872, 23819354), (1417, 14658064), (1744, 11909677), (2834, 7329032), (5668, 3664516), (11336, 1832258), (22672, 916129)]