18945654

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{4957}}^1$

素因数の和:4989

約数の個数: 48

約数和(自身を含む): 47477808

約数和(自身を除く): 28532154

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 49, 78, 91, 98, 147, 182, 273, 294, 546, 637, 1274, 1911, 3822, 4957, 9914, 14871, 29742, 34699, 64441, 69398, 104097, 128882, 193323, 208194, 242893, 386646, 451087, 485786, 728679, 902174, 1353261, 1457358, 2706522, 3157609, 6315218, 9472827, 18945654]

約数ペア:

[(1, 18945654), (2, 9472827), (3, 6315218), (6, 3157609), (7, 2706522), (13, 1457358), (14, 1353261), (21, 902174), (26, 728679), (39, 485786), (42, 451087), (49, 386646), (78, 242893), (91, 208194), (98, 193323), (147, 128882), (182, 104097), (273, 69398), (294, 64441), (546, 34699), (637, 29742), (1274, 14871), (1911, 9914), (3822, 4957)]