3131000

素因数分解:

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

素因数の和:153

約数の個数: 64

約数和(自身を含む): 7637760

約数和(自身を除く): 4506760

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 101, 124, 125, 155, 200, 202, 248, 250, 310, 404, 500, 505, 620, 775, 808, 1000, 1010, 1240, 1550, 2020, 2525, 3100, 3131, 3875, 4040, 5050, 6200, 6262, 7750, 10100, 12524, 12625, 15500, 15655, 20200, 25048, 25250, 31000, 31310, 50500, 62620, 78275, 101000, 125240, 156550, 313100, 391375, 626200, 782750, 1565500, 3131000]

約数ペア:

[(1, 3131000), (2, 1565500), (4, 782750), (5, 626200), (8, 391375), (10, 313100), (20, 156550), (25, 125240), (31, 101000), (40, 78275), (50, 62620), (62, 50500), (100, 31310), (101, 31000), (124, 25250), (125, 25048), (155, 20200), (200, 15655), (202, 15500), (248, 12625), (250, 12524), (310, 10100), (404, 7750), (500, 6262), (505, 6200), (620, 5050), (775, 4040), (808, 3875), (1000, 3131), (1010, 3100), (1240, 2525), (1550, 2020)]