1600220

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:158

約数の個数: 48

約数和(自身を含む): 3628800

約数和(自身を除く): 2028580

約数列:

[1, 2, 4, 5, 10, 20, 29, 31, 58, 62, 89, 116, 124, 145, 155, 178, 290, 310, 356, 445, 580, 620, 890, 899, 1780, 1798, 2581, 2759, 3596, 4495, 5162, 5518, 8990, 10324, 11036, 12905, 13795, 17980, 25810, 27590, 51620, 55180, 80011, 160022, 320044, 400055, 800110, 1600220]

約数ペア:

[(1, 1600220), (2, 800110), (4, 400055), (5, 320044), (10, 160022), (20, 80011), (29, 55180), (31, 51620), (58, 27590), (62, 25810), (89, 17980), (116, 13795), (124, 12905), (145, 11036), (155, 10324), (178, 8990), (290, 5518), (310, 5162), (356, 4495), (445, 3596), (580, 2759), (620, 2581), (890, 1798), (899, 1780)]