19804564

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{571}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 40360320

約数和(自身を除く): 20555756

約数列:

[1, 2, 4, 13, 23, 26, 29, 46, 52, 58, 92, 116, 299, 377, 571, 598, 667, 754, 1142, 1196, 1334, 1508, 2284, 2668, 7423, 8671, 13133, 14846, 16559, 17342, 26266, 29692, 33118, 34684, 52532, 66236, 170729, 215267, 341458, 380857, 430534, 682916, 761714, 861068, 1523428, 4951141, 9902282, 19804564]

約数ペア:

[(1, 19804564), (2, 9902282), (4, 4951141), (13, 1523428), (23, 861068), (26, 761714), (29, 682916), (46, 430534), (52, 380857), (58, 341458), (92, 215267), (116, 170729), (299, 66236), (377, 52532), (571, 34684), (598, 33118), (667, 29692), (754, 26266), (1142, 17342), (1196, 16559), (1334, 14846), (1508, 13133), (2284, 8671), (2668, 7423)]