21222120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:235

約数の個数: 128

約数和(自身を含む): 68739840

約数和(自身を除く): 47517720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 101, 102, 103, 120, 136, 170, 202, 204, 206, 255, 303, 309, 340, 404, 408, 412, 505, 510, 515, 606, 618, 680, 808, 824, 1010, 1020, 1030, 1212, 1236, 1515, 1545, 1717, 1751, 2020, 2040, 2060, 2424, 2472, 3030, 3090, 3434, 3502, 4040, 4120, 5151, 5253, 6060, 6180, 6868, 7004, 8585, 8755, 10302, 10403, 10506, 12120, 12360, 13736, 14008, 17170, 17510, 20604, 20806, 21012, 25755, 26265, 31209, 34340, 35020, 41208, 41612, 42024, 51510, 52015, 52530, 62418, 68680, 70040, 83224, 103020, 104030, 105060, 124836, 156045, 176851, 206040, 208060, 210120, 249672, 312090, 353702, 416120, 530553, 624180, 707404, 884255, 1061106, 1248360, 1414808, 1768510, 2122212, 2652765, 3537020, 4244424, 5305530, 7074040, 10611060, 21222120]

約数ペア:

[(1, 21222120), (2, 10611060), (3, 7074040), (4, 5305530), (5, 4244424), (6, 3537020), (8, 2652765), (10, 2122212), (12, 1768510), (15, 1414808), (17, 1248360), (20, 1061106), (24, 884255), (30, 707404), (34, 624180), (40, 530553), (51, 416120), (60, 353702), (68, 312090), (85, 249672), (101, 210120), (102, 208060), (103, 206040), (120, 176851), (136, 156045), (170, 124836), (202, 105060), (204, 104030), (206, 103020), (255, 83224), (303, 70040), (309, 68680), (340, 62418), (404, 52530), (408, 52015), (412, 51510), (505, 42024), (510, 41612), (515, 41208), (606, 35020), (618, 34340), (680, 31209), (808, 26265), (824, 25755), (1010, 21012), (1020, 20806), (1030, 20604), (1212, 17510), (1236, 17170), (1515, 14008), (1545, 13736), (1717, 12360), (1751, 12120), (2020, 10506), (2040, 10403), (2060, 10302), (2424, 8755), (2472, 8585), (3030, 7004), (3090, 6868), (3434, 6180), (3502, 6060), (4040, 5253), (4120, 5151)]