4000550

素因数分解:

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

素因数の和:161

約数の個数: 48

約数和(自身を含む): 8035200

約数和(自身を除く): 4034650

約数列:

[1, 2, 5, 10, 25, 29, 31, 50, 58, 62, 89, 145, 155, 178, 290, 310, 445, 725, 775, 890, 899, 1450, 1550, 1798, 2225, 2581, 2759, 4450, 4495, 5162, 5518, 8990, 12905, 13795, 22475, 25810, 27590, 44950, 64525, 68975, 80011, 129050, 137950, 160022, 400055, 800110, 2000275, 4000550]

約数ペア:

[(1, 4000550), (2, 2000275), (5, 800110), (10, 400055), (25, 160022), (29, 137950), (31, 129050), (50, 80011), (58, 68975), (62, 64525), (89, 44950), (145, 27590), (155, 25810), (178, 22475), (290, 13795), (310, 12905), (445, 8990), (725, 5518), (775, 5162), (890, 4495), (899, 4450), (1450, 2759), (1550, 2581), (1798, 2225)]