290403440

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{40787}}^1$

素因数の和:40889

約数の個数: 40

約数和(自身を含む): 682791120

約数和(自身を除く): 392387680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 40787, 81574, 163148, 203935, 326296, 407870, 652592, 815740, 1631480, 3262960, 3630043, 7260086, 14520172, 18150215, 29040344, 36300430, 58080688, 72600860, 145201720, 290403440]

約数ペア:

[(1, 290403440), (2, 145201720), (4, 72600860), (5, 58080688), (8, 36300430), (10, 29040344), (16, 18150215), (20, 14520172), (40, 7260086), (80, 3630043), (89, 3262960), (178, 1631480), (356, 815740), (445, 652592), (712, 407870), (890, 326296), (1424, 203935), (1780, 163148), (3560, 81574), (7120, 40787)]