20815676980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{419}}^1\times {\mathrm{4861}}^1$

素因数の和:5369

約数の個数: 96

約数和(自身を含む): 50773282560

約数和(自身を除く): 29957605580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 73, 140, 146, 292, 365, 419, 511, 730, 838, 1022, 1460, 1676, 2044, 2095, 2555, 2933, 4190, 4861, 5110, 5866, 8380, 9722, 10220, 11732, 14665, 19444, 24305, 29330, 30587, 34027, 48610, 58660, 61174, 68054, 97220, 122348, 136108, 152935, 170135, 214109, 305870, 340270, 354853, 428218, 611740, 680540, 709706, 856436, 1070545, 1419412, 1774265, 2036759, 2141090, 2483971, 3548530, 4073518, 4282180, 4967942, 7097060, 8147036, 9935884, 10183795, 12419855, 14257313, 20367590, 24839710, 28514626, 40735180, 49679420, 57029252, 71286565, 142573130, 148683407, 285146260, 297366814, 594733628, 743417035, 1040783849, 1486834070, 2081567698, 2973668140, 4163135396, 5203919245, 10407838490, 20815676980]

約数ペア:

[(1, 20815676980), (2, 10407838490), (4, 5203919245), (5, 4163135396), (7, 2973668140), (10, 2081567698), (14, 1486834070), (20, 1040783849), (28, 743417035), (35, 594733628), (70, 297366814), (73, 285146260), (140, 148683407), (146, 142573130), (292, 71286565), (365, 57029252), (419, 49679420), (511, 40735180), (730, 28514626), (838, 24839710), (1022, 20367590), (1460, 14257313), (1676, 12419855), (2044, 10183795), (2095, 9935884), (2555, 8147036), (2933, 7097060), (4190, 4967942), (4861, 4282180), (5110, 4073518), (5866, 3548530), (8380, 2483971), (9722, 2141090), (10220, 2036759), (11732, 1774265), (14665, 1419412), (19444, 1070545), (24305, 856436), (29330, 709706), (30587, 680540), (34027, 611740), (48610, 428218), (58660, 354853), (61174, 340270), (68054, 305870), (97220, 214109), (122348, 170135), (136108, 152935)]