21769956

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{257}}^1$

素因数の和:461

約数の個数: 72

約数和(自身を含む): 59821944

約数和(自身を除く): 38051988

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 181, 234, 257, 362, 468, 514, 543, 724, 771, 1028, 1086, 1542, 1629, 2172, 2313, 2353, 3084, 3258, 3341, 4626, 4706, 6516, 6682, 7059, 9252, 9412, 10023, 13364, 14118, 20046, 21177, 28236, 30069, 40092, 42354, 46517, 60138, 84708, 93034, 120276, 139551, 186068, 279102, 418653, 558204, 604721, 837306, 1209442, 1674612, 1814163, 2418884, 3628326, 5442489, 7256652, 10884978, 21769956]

約数ペア:

[(1, 21769956), (2, 10884978), (3, 7256652), (4, 5442489), (6, 3628326), (9, 2418884), (12, 1814163), (13, 1674612), (18, 1209442), (26, 837306), (36, 604721), (39, 558204), (52, 418653), (78, 279102), (117, 186068), (156, 139551), (181, 120276), (234, 93034), (257, 84708), (362, 60138), (468, 46517), (514, 42354), (543, 40092), (724, 30069), (771, 28236), (1028, 21177), (1086, 20046), (1542, 14118), (1629, 13364), (2172, 10023), (2313, 9412), (2353, 9252), (3084, 7059), (3258, 6682), (3341, 6516), (4626, 4706)]