18491865

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{181}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 34856640

約数和(自身を除く): 16364775

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 139, 147, 181, 245, 417, 543, 695, 735, 905, 973, 1267, 2085, 2715, 2919, 3801, 4865, 6335, 6811, 8869, 14595, 19005, 20433, 25159, 26607, 34055, 44345, 75477, 102165, 125795, 133035, 176113, 377385, 528339, 880565, 1232791, 2641695, 3698373, 6163955, 18491865]

約数ペア:

[(1, 18491865), (3, 6163955), (5, 3698373), (7, 2641695), (15, 1232791), (21, 880565), (35, 528339), (49, 377385), (105, 176113), (139, 133035), (147, 125795), (181, 102165), (245, 75477), (417, 44345), (543, 34055), (695, 26607), (735, 25159), (905, 20433), (973, 19005), (1267, 14595), (2085, 8869), (2715, 6811), (2919, 6335), (3801, 4865)]