20969806

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{227}}^1$

素因数の和:289

約数の個数: 64

約数和(自身を含む): 41368320

約数和(自身を除く): 20398514

約数列:

[1, 2, 11, 13, 17, 19, 22, 26, 34, 38, 143, 187, 209, 221, 227, 247, 286, 323, 374, 418, 442, 454, 494, 646, 2431, 2497, 2717, 2951, 3553, 3859, 4199, 4313, 4862, 4994, 5434, 5902, 7106, 7718, 8398, 8626, 32461, 42449, 46189, 47443, 50167, 56069, 64922, 73321, 84898, 92378, 94886, 100334, 112138, 146642, 551837, 616759, 806531, 953173, 1103674, 1233518, 1613062, 1906346, 10484903, 20969806]

約数ペア:

[(1, 20969806), (2, 10484903), (11, 1906346), (13, 1613062), (17, 1233518), (19, 1103674), (22, 953173), (26, 806531), (34, 616759), (38, 551837), (143, 146642), (187, 112138), (209, 100334), (221, 94886), (227, 92378), (247, 84898), (286, 73321), (323, 64922), (374, 56069), (418, 50167), (442, 47443), (454, 46189), (494, 42449), (646, 32461), (2431, 8626), (2497, 8398), (2717, 7718), (2951, 7106), (3553, 5902), (3859, 5434), (4199, 4994), (4313, 4862)]