20740080

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{839}}^1$

素因数の和:958

約数の個数: 80

約数和(自身を含む): 64995840

約数和(自身を除く): 44255760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 103, 120, 206, 240, 309, 412, 515, 618, 824, 839, 1030, 1236, 1545, 1648, 1678, 2060, 2472, 2517, 3090, 3356, 4120, 4195, 4944, 5034, 6180, 6712, 8240, 8390, 10068, 12360, 12585, 13424, 16780, 20136, 24720, 25170, 33560, 40272, 50340, 67120, 86417, 100680, 172834, 201360, 259251, 345668, 432085, 518502, 691336, 864170, 1037004, 1296255, 1382672, 1728340, 2074008, 2592510, 3456680, 4148016, 5185020, 6913360, 10370040, 20740080]

約数ペア:

[(1, 20740080), (2, 10370040), (3, 6913360), (4, 5185020), (5, 4148016), (6, 3456680), (8, 2592510), (10, 2074008), (12, 1728340), (15, 1382672), (16, 1296255), (20, 1037004), (24, 864170), (30, 691336), (40, 518502), (48, 432085), (60, 345668), (80, 259251), (103, 201360), (120, 172834), (206, 100680), (240, 86417), (309, 67120), (412, 50340), (515, 40272), (618, 33560), (824, 25170), (839, 24720), (1030, 20136), (1236, 16780), (1545, 13424), (1648, 12585), (1678, 12360), (2060, 10068), (2472, 8390), (2517, 8240), (3090, 6712), (3356, 6180), (4120, 5034), (4195, 4944)]