21491652

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19681}}^1$

素因数の和:19708

約数の個数: 48

約数和(自身を含む): 61722752

約数和(自身を除く): 40231100

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 21, 26, 28, 39, 42, 52, 78, 84, 91, 156, 182, 273, 364, 546, 1092, 19681, 39362, 59043, 78724, 118086, 137767, 236172, 255853, 275534, 413301, 511706, 551068, 767559, 826602, 1023412, 1535118, 1653204, 1790971, 3070236, 3581942, 5372913, 7163884, 10745826, 21491652]

約数ペア:

[(1, 21491652), (2, 10745826), (3, 7163884), (4, 5372913), (6, 3581942), (7, 3070236), (12, 1790971), (13, 1653204), (14, 1535118), (21, 1023412), (26, 826602), (28, 767559), (39, 551068), (42, 511706), (52, 413301), (78, 275534), (84, 255853), (91, 236172), (156, 137767), (182, 118086), (273, 78724), (364, 59043), (546, 39362), (1092, 19681)]