320494000

素因数分解:

$2^4\times 5^3\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:192

約数の個数: 160

約数和(自身を含む): 820340352

約数和(自身を除く): 499846352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 37, 40, 50, 61, 71, 74, 80, 100, 122, 125, 142, 148, 185, 200, 244, 250, 284, 296, 305, 355, 370, 400, 488, 500, 568, 592, 610, 710, 740, 925, 976, 1000, 1136, 1220, 1420, 1480, 1525, 1775, 1850, 2000, 2257, 2440, 2627, 2840, 2960, 3050, 3550, 3700, 4331, 4514, 4625, 4880, 5254, 5680, 6100, 7100, 7400, 7625, 8662, 8875, 9028, 9250, 10508, 11285, 12200, 13135, 14200, 14800, 15250, 17324, 17750, 18056, 18500, 21016, 21655, 22570, 24400, 26270, 28400, 30500, 34648, 35500, 36112, 37000, 42032, 43310, 45140, 52540, 56425, 61000, 65675, 69296, 71000, 74000, 86620, 90280, 105080, 108275, 112850, 122000, 131350, 142000, 160247, 173240, 180560, 210160, 216550, 225700, 262700, 282125, 320494, 328375, 346480, 433100, 451400, 525400, 541375, 564250, 640988, 656750, 801235, 866200, 902800, 1050800, 1082750, 1128500, 1281976, 1313500, 1602470, 1732400, 2165500, 2257000, 2563952, 2627000, 3204940, 4006175, 4331000, 4514000, 5254000, 6409880, 8012350, 8662000, 12819760, 16024700, 20030875, 32049400, 40061750, 64098800, 80123500, 160247000, 320494000]

約数ペア:

[(1, 320494000), (2, 160247000), (4, 80123500), (5, 64098800), (8, 40061750), (10, 32049400), (16, 20030875), (20, 16024700), (25, 12819760), (37, 8662000), (40, 8012350), (50, 6409880), (61, 5254000), (71, 4514000), (74, 4331000), (80, 4006175), (100, 3204940), (122, 2627000), (125, 2563952), (142, 2257000), (148, 2165500), (185, 1732400), (200, 1602470), (244, 1313500), (250, 1281976), (284, 1128500), (296, 1082750), (305, 1050800), (355, 902800), (370, 866200), (400, 801235), (488, 656750), (500, 640988), (568, 564250), (592, 541375), (610, 525400), (710, 451400), (740, 433100), (925, 346480), (976, 328375), (1000, 320494), (1136, 282125), (1220, 262700), (1420, 225700), (1480, 216550), (1525, 210160), (1775, 180560), (1850, 173240), (2000, 160247), (2257, 142000), (2440, 131350), (2627, 122000), (2840, 112850), (2960, 108275), (3050, 105080), (3550, 90280), (3700, 86620), (4331, 74000), (4514, 71000), (4625, 69296), (4880, 65675), (5254, 61000), (5680, 56425), (6100, 52540), (7100, 45140), (7400, 43310), (7625, 42032), (8662, 37000), (8875, 36112), (9028, 35500), (9250, 34648), (10508, 30500), (11285, 28400), (12200, 26270), (13135, 24400), (14200, 22570), (14800, 21655), (15250, 21016), (17324, 18500), (17750, 18056)]