20511894

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{499}}^1$

素因数の和:565

約数の個数: 64

約数和(自身を含む): 48384000

約数和(自身を除く): 27872106

約数列:

[1, 2, 3, 6, 13, 17, 26, 31, 34, 39, 51, 62, 78, 93, 102, 186, 221, 403, 442, 499, 527, 663, 806, 998, 1054, 1209, 1326, 1497, 1581, 2418, 2994, 3162, 6487, 6851, 8483, 12974, 13702, 15469, 16966, 19461, 20553, 25449, 30938, 38922, 41106, 46407, 50898, 92814, 110279, 201097, 220558, 262973, 330837, 402194, 525946, 603291, 661674, 788919, 1206582, 1577838, 3418649, 6837298, 10255947, 20511894]

約数ペア:

[(1, 20511894), (2, 10255947), (3, 6837298), (6, 3418649), (13, 1577838), (17, 1206582), (26, 788919), (31, 661674), (34, 603291), (39, 525946), (51, 402194), (62, 330837), (78, 262973), (93, 220558), (102, 201097), (186, 110279), (221, 92814), (403, 50898), (442, 46407), (499, 41106), (527, 38922), (663, 30938), (806, 25449), (998, 20553), (1054, 19461), (1209, 16966), (1326, 15469), (1497, 13702), (1581, 12974), (2418, 8483), (2994, 6851), (3162, 6487)]