31564120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{811}}^1$

素因数の和:968

約数の個数: 64

約数和(自身を含む): 81849600

約数和(自身を除く): 50285480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 139, 140, 278, 280, 556, 695, 811, 973, 1112, 1390, 1622, 1946, 2780, 3244, 3892, 4055, 4865, 5560, 5677, 6488, 7784, 8110, 9730, 11354, 16220, 19460, 22708, 28385, 32440, 38920, 45416, 56770, 112729, 113540, 225458, 227080, 450916, 563645, 789103, 901832, 1127290, 1578206, 2254580, 3156412, 3945515, 4509160, 6312824, 7891030, 15782060, 31564120]

約数ペア:

[(1, 31564120), (2, 15782060), (4, 7891030), (5, 6312824), (7, 4509160), (8, 3945515), (10, 3156412), (14, 2254580), (20, 1578206), (28, 1127290), (35, 901832), (40, 789103), (56, 563645), (70, 450916), (139, 227080), (140, 225458), (278, 113540), (280, 112729), (556, 56770), (695, 45416), (811, 38920), (973, 32440), (1112, 28385), (1390, 22708), (1622, 19460), (1946, 16220), (2780, 11354), (3244, 9730), (3892, 8110), (4055, 7784), (4865, 6488), (5560, 5677)]