21394516

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{331}}^1$

素因数の和:472

約数の個数: 48

約数和(自身を含む): 44509248

約数和(自身を除く): 23114732

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 113, 143, 226, 286, 331, 452, 572, 662, 1243, 1324, 1469, 2486, 2938, 3641, 4303, 4972, 5876, 7282, 8606, 14564, 16159, 17212, 32318, 37403, 47333, 64636, 74806, 94666, 149612, 189332, 411433, 486239, 822866, 972478, 1645732, 1944956, 5348629, 10697258, 21394516]

約数ペア:

[(1, 21394516), (2, 10697258), (4, 5348629), (11, 1944956), (13, 1645732), (22, 972478), (26, 822866), (44, 486239), (52, 411433), (113, 189332), (143, 149612), (226, 94666), (286, 74806), (331, 64636), (452, 47333), (572, 37403), (662, 32318), (1243, 17212), (1324, 16159), (1469, 14564), (2486, 8606), (2938, 7282), (3641, 5876), (4303, 4972)]