21780948

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{1303}}^1$

素因数の和:1516

約数の個数: 48

約数和(自身を含む): 58419200

約数和(自身を除く): 36638252

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 199, 398, 597, 796, 1194, 1303, 1393, 2388, 2606, 2786, 3909, 4179, 5212, 5572, 7818, 8358, 9121, 15636, 16716, 18242, 27363, 36484, 54726, 109452, 259297, 518594, 777891, 1037188, 1555782, 1815079, 3111564, 3630158, 5445237, 7260316, 10890474, 21780948]

約数ペア:

[(1, 21780948), (2, 10890474), (3, 7260316), (4, 5445237), (6, 3630158), (7, 3111564), (12, 1815079), (14, 1555782), (21, 1037188), (28, 777891), (42, 518594), (84, 259297), (199, 109452), (398, 54726), (597, 36484), (796, 27363), (1194, 18242), (1303, 16716), (1393, 15636), (2388, 9121), (2606, 8358), (2786, 7818), (3909, 5572), (4179, 5212)]