19393120

素因数分解:

$2^5\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1987}}^1$

素因数の和:2063

約数の個数: 48

約数和(自身を含む): 46590768

約数和(自身を除く): 27197648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 80, 122, 160, 244, 305, 488, 610, 976, 1220, 1952, 1987, 2440, 3974, 4880, 7948, 9760, 9935, 15896, 19870, 31792, 39740, 63584, 79480, 121207, 158960, 242414, 317920, 484828, 606035, 969656, 1212070, 1939312, 2424140, 3878624, 4848280, 9696560, 19393120]

約数ペア:

[(1, 19393120), (2, 9696560), (4, 4848280), (5, 3878624), (8, 2424140), (10, 1939312), (16, 1212070), (20, 969656), (32, 606035), (40, 484828), (61, 317920), (80, 242414), (122, 158960), (160, 121207), (244, 79480), (305, 63584), (488, 39740), (610, 31792), (976, 19870), (1220, 15896), (1952, 9935), (1987, 9760), (2440, 7948), (3974, 4880)]