20961240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{4721}}^1$

素因数の和:4772

約数の個数: 64

約数和(自身を含む): 64596960

約数和(自身を除く): 43635720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 37, 40, 60, 74, 111, 120, 148, 185, 222, 296, 370, 444, 555, 740, 888, 1110, 1480, 2220, 4440, 4721, 9442, 14163, 18884, 23605, 28326, 37768, 47210, 56652, 70815, 94420, 113304, 141630, 174677, 188840, 283260, 349354, 524031, 566520, 698708, 873385, 1048062, 1397416, 1746770, 2096124, 2620155, 3493540, 4192248, 5240310, 6987080, 10480620, 20961240]

約数ペア:

[(1, 20961240), (2, 10480620), (3, 6987080), (4, 5240310), (5, 4192248), (6, 3493540), (8, 2620155), (10, 2096124), (12, 1746770), (15, 1397416), (20, 1048062), (24, 873385), (30, 698708), (37, 566520), (40, 524031), (60, 349354), (74, 283260), (111, 188840), (120, 174677), (148, 141630), (185, 113304), (222, 94420), (296, 70815), (370, 56652), (444, 47210), (555, 37768), (740, 28326), (888, 23605), (1110, 18884), (1480, 14163), (2220, 9442), (4440, 4721)]