2540720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{349}}^1$

素因数の和:382

約数の個数: 80

約数和(自身を含む): 7291200

約数和(自身を除く): 4750480

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 182, 208, 260, 280, 349, 364, 455, 520, 560, 698, 728, 910, 1040, 1396, 1456, 1745, 1820, 2443, 2792, 3490, 3640, 4537, 4886, 5584, 6980, 7280, 9074, 9772, 12215, 13960, 18148, 19544, 22685, 24430, 27920, 31759, 36296, 39088, 45370, 48860, 63518, 72592, 90740, 97720, 127036, 158795, 181480, 195440, 254072, 317590, 362960, 508144, 635180, 1270360, 2540720]

約数ペア:

[(1, 2540720), (2, 1270360), (4, 635180), (5, 508144), (7, 362960), (8, 317590), (10, 254072), (13, 195440), (14, 181480), (16, 158795), (20, 127036), (26, 97720), (28, 90740), (35, 72592), (40, 63518), (52, 48860), (56, 45370), (65, 39088), (70, 36296), (80, 31759), (91, 27920), (104, 24430), (112, 22685), (130, 19544), (140, 18148), (182, 13960), (208, 12215), (260, 9772), (280, 9074), (349, 7280), (364, 6980), (455, 5584), (520, 4886), (560, 4537), (698, 3640), (728, 3490), (910, 2792), (1040, 2443), (1396, 1820), (1456, 1745)]