15905480

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1$

素因数の和:270

約数の個数: 64

約数和(自身を含む): 37601280

約数和(自身を除く): 21695800

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 101, 124, 127, 155, 202, 248, 254, 310, 404, 505, 508, 620, 635, 808, 1010, 1016, 1240, 1270, 2020, 2540, 3131, 3937, 4040, 5080, 6262, 7874, 12524, 12827, 15655, 15748, 19685, 25048, 25654, 31310, 31496, 39370, 51308, 62620, 64135, 78740, 102616, 125240, 128270, 157480, 256540, 397637, 513080, 795274, 1590548, 1988185, 3181096, 3976370, 7952740, 15905480]

約数ペア:

[(1, 15905480), (2, 7952740), (4, 3976370), (5, 3181096), (8, 1988185), (10, 1590548), (20, 795274), (31, 513080), (40, 397637), (62, 256540), (101, 157480), (124, 128270), (127, 125240), (155, 102616), (202, 78740), (248, 64135), (254, 62620), (310, 51308), (404, 39370), (505, 31496), (508, 31310), (620, 25654), (635, 25048), (808, 19685), (1010, 15748), (1016, 15655), (1240, 12827), (1270, 12524), (2020, 7874), (2540, 6262), (3131, 5080), (3937, 4040)]