21148218

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{12911}}^1$

素因数の和:12939

約数の個数: 48

約数和(自身を含む): 56399616

約数和(自身を除く): 35251398

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 39, 42, 63, 78, 91, 117, 126, 182, 234, 273, 546, 819, 1638, 12911, 25822, 38733, 77466, 90377, 116199, 167843, 180754, 232398, 271131, 335686, 503529, 542262, 813393, 1007058, 1174901, 1510587, 1626786, 2349802, 3021174, 3524703, 7049406, 10574109, 21148218]

約数ペア:

[(1, 21148218), (2, 10574109), (3, 7049406), (6, 3524703), (7, 3021174), (9, 2349802), (13, 1626786), (14, 1510587), (18, 1174901), (21, 1007058), (26, 813393), (39, 542262), (42, 503529), (63, 335686), (78, 271131), (91, 232398), (117, 180754), (126, 167843), (182, 116199), (234, 90377), (273, 77466), (546, 38733), (819, 25822), (1638, 12911)]