81587805

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^3\times {\mathrm{61}}^1$

素因数の和:139

約数の個数: 64

約数和(自身を含む): 150823680

約数和(自身を除く): 69235875

約数列:

[1, 3, 5, 13, 15, 19, 39, 57, 61, 65, 95, 183, 195, 247, 285, 305, 361, 741, 793, 915, 1083, 1159, 1235, 1805, 2379, 3477, 3705, 3965, 4693, 5415, 5795, 6859, 11895, 14079, 15067, 17385, 20577, 22021, 23465, 34295, 45201, 66063, 70395, 75335, 89167, 102885, 110105, 226005, 267501, 286273, 330315, 418399, 445835, 858819, 1255197, 1337505, 1431365, 2091995, 4294095, 5439187, 6275985, 16317561, 27195935, 81587805]

約数ペア:

[(1, 81587805), (3, 27195935), (5, 16317561), (13, 6275985), (15, 5439187), (19, 4294095), (39, 2091995), (57, 1431365), (61, 1337505), (65, 1255197), (95, 858819), (183, 445835), (195, 418399), (247, 330315), (285, 286273), (305, 267501), (361, 226005), (741, 110105), (793, 102885), (915, 89167), (1083, 75335), (1159, 70395), (1235, 66063), (1805, 45201), (2379, 34295), (3477, 23465), (3705, 22021), (3965, 20577), (4693, 17385), (5415, 15067), (5795, 14079), (6859, 11895)]