21120918

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{383}}^1$

素因数の和:509

約数の個数: 64

約数和(自身を含む): 52641792

約数和(自身を除く): 31520874

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 78, 91, 101, 182, 202, 273, 303, 383, 546, 606, 707, 766, 1149, 1313, 1414, 2121, 2298, 2626, 2681, 3939, 4242, 4979, 5362, 7878, 8043, 9191, 9958, 14937, 16086, 18382, 27573, 29874, 34853, 38683, 55146, 69706, 77366, 104559, 116049, 209118, 232098, 270781, 502879, 541562, 812343, 1005758, 1508637, 1624686, 3017274, 3520153, 7040306, 10560459, 21120918]

約数ペア:

[(1, 21120918), (2, 10560459), (3, 7040306), (6, 3520153), (7, 3017274), (13, 1624686), (14, 1508637), (21, 1005758), (26, 812343), (39, 541562), (42, 502879), (78, 270781), (91, 232098), (101, 209118), (182, 116049), (202, 104559), (273, 77366), (303, 69706), (383, 55146), (546, 38683), (606, 34853), (707, 29874), (766, 27573), (1149, 18382), (1313, 16086), (1414, 14937), (2121, 9958), (2298, 9191), (2626, 8043), (2681, 7878), (3939, 5362), (4242, 4979)]