20804899120

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{4263299}}^1$

素因数の和:4263373

約数の個数: 40

約数和(自身を含む): 49164375600

約数和(自身を除く): 28359476480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 4263299, 8526598, 17053196, 21316495, 34106392, 42632990, 68212784, 85265980, 170531960, 260061239, 341063920, 520122478, 1040244956, 1300306195, 2080489912, 2600612390, 4160979824, 5201224780, 10402449560, 20804899120]

約数ペア:

[(1, 20804899120), (2, 10402449560), (4, 5201224780), (5, 4160979824), (8, 2600612390), (10, 2080489912), (16, 1300306195), (20, 1040244956), (40, 520122478), (61, 341063920), (80, 260061239), (122, 170531960), (244, 85265980), (305, 68212784), (488, 42632990), (610, 34106392), (976, 21316495), (1220, 17053196), (2440, 8526598), (4880, 4263299)]