8200120

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{389}}^1$

素因数の和:448

約数の個数: 64

約数和(自身を含む): 20217600

約数和(自身を除く): 12017480

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 31, 34, 40, 62, 68, 85, 124, 136, 155, 170, 248, 310, 340, 389, 527, 620, 680, 778, 1054, 1240, 1556, 1945, 2108, 2635, 3112, 3890, 4216, 5270, 6613, 7780, 10540, 12059, 13226, 15560, 21080, 24118, 26452, 33065, 48236, 52904, 60295, 66130, 96472, 120590, 132260, 205003, 241180, 264520, 410006, 482360, 820012, 1025015, 1640024, 2050030, 4100060, 8200120]

約数ペア:

[(1, 8200120), (2, 4100060), (4, 2050030), (5, 1640024), (8, 1025015), (10, 820012), (17, 482360), (20, 410006), (31, 264520), (34, 241180), (40, 205003), (62, 132260), (68, 120590), (85, 96472), (124, 66130), (136, 60295), (155, 52904), (170, 48236), (248, 33065), (310, 26452), (340, 24118), (389, 21080), (527, 15560), (620, 13226), (680, 12059), (778, 10540), (1054, 7780), (1240, 6613), (1556, 5270), (1945, 4216), (2108, 3890), (2635, 3112)]