19798740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8461}}^1$

素因数の和:8489

約数の個数: 72

約数和(自身を含む): 64683528

約数和(自身を除く): 44884788

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 8461, 16922, 25383, 33844, 42305, 50766, 76149, 84610, 101532, 109993, 126915, 152298, 169220, 219986, 253830, 304596, 329979, 380745, 439972, 507660, 549965, 659958, 761490, 989937, 1099930, 1319916, 1522980, 1649895, 1979874, 2199860, 3299790, 3959748, 4949685, 6599580, 9899370, 19798740]

約数ペア:

[(1, 19798740), (2, 9899370), (3, 6599580), (4, 4949685), (5, 3959748), (6, 3299790), (9, 2199860), (10, 1979874), (12, 1649895), (13, 1522980), (15, 1319916), (18, 1099930), (20, 989937), (26, 761490), (30, 659958), (36, 549965), (39, 507660), (45, 439972), (52, 380745), (60, 329979), (65, 304596), (78, 253830), (90, 219986), (117, 169220), (130, 152298), (156, 126915), (180, 109993), (195, 101532), (234, 84610), (260, 76149), (390, 50766), (468, 42305), (585, 33844), (780, 25383), (1170, 16922), (2340, 8461)]