720042040

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{257}}^1\times {\mathrm{787}}^1$

素因数の和:1144

約数の個数: 64

約数和(自身を含む): 1646762400

約数和(自身を除く): 926720360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 257, 356, 445, 514, 712, 787, 890, 1028, 1285, 1574, 1780, 2056, 2570, 3148, 3560, 3935, 5140, 6296, 7870, 10280, 15740, 22873, 31480, 45746, 70043, 91492, 114365, 140086, 182984, 202259, 228730, 280172, 350215, 404518, 457460, 560344, 700430, 809036, 914920, 1011295, 1400860, 1618072, 2022590, 2801720, 4045180, 8090360, 18001051, 36002102, 72004204, 90005255, 144008408, 180010510, 360021020, 720042040]

約数ペア:

[(1, 720042040), (2, 360021020), (4, 180010510), (5, 144008408), (8, 90005255), (10, 72004204), (20, 36002102), (40, 18001051), (89, 8090360), (178, 4045180), (257, 2801720), (356, 2022590), (445, 1618072), (514, 1400860), (712, 1011295), (787, 914920), (890, 809036), (1028, 700430), (1285, 560344), (1574, 457460), (1780, 404518), (2056, 350215), (2570, 280172), (3148, 228730), (3560, 202259), (3935, 182984), (5140, 140086), (6296, 114365), (7870, 91492), (10280, 70043), (15740, 45746), (22873, 31480)]