21197878

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{241}}^1$

素因数の和:472

約数の個数: 32

約数和(自身を含む): 36590400

約数和(自身を除く): 15392522

約数列:

[1, 2, 13, 17, 26, 34, 199, 221, 241, 398, 442, 482, 2587, 3133, 3383, 4097, 5174, 6266, 6766, 8194, 43979, 47959, 53261, 87958, 95918, 106522, 623467, 815303, 1246934, 1630606, 10598939, 21197878]

約数ペア:

[(1, 21197878), (2, 10598939), (13, 1630606), (17, 1246934), (26, 815303), (34, 623467), (199, 106522), (221, 95918), (241, 87958), (398, 53261), (442, 47959), (482, 43979), (2587, 8194), (3133, 6766), (3383, 6266), (4097, 5174)]