21294273

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1013}}^1$

素因数の和:1054

約数の個数: 48

約数和(自身を含む): 38840256

約数和(自身を除く): 17545983

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 49, 77, 91, 143, 147, 231, 273, 429, 539, 637, 1001, 1013, 1617, 1911, 3003, 3039, 7007, 7091, 11143, 13169, 21021, 21273, 33429, 39507, 49637, 78001, 92183, 144859, 148911, 234003, 276549, 434577, 546007, 645281, 1014013, 1638021, 1935843, 3042039, 7098091, 21294273]

約数ペア:

[(1, 21294273), (3, 7098091), (7, 3042039), (11, 1935843), (13, 1638021), (21, 1014013), (33, 645281), (39, 546007), (49, 434577), (77, 276549), (91, 234003), (143, 148911), (147, 144859), (231, 92183), (273, 78001), (429, 49637), (539, 39507), (637, 33429), (1001, 21273), (1013, 21021), (1617, 13169), (1911, 11143), (3003, 7091), (3039, 7007)]