19763920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{607}}^1$

素因数の和:668

約数の個数: 80

約数和(自身を含む): 51568128

約数和(自身を除く): 31804208

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 37, 40, 44, 55, 74, 80, 88, 110, 148, 176, 185, 220, 296, 370, 407, 440, 592, 607, 740, 814, 880, 1214, 1480, 1628, 2035, 2428, 2960, 3035, 3256, 4070, 4856, 6070, 6512, 6677, 8140, 9712, 12140, 13354, 16280, 22459, 24280, 26708, 32560, 33385, 44918, 48560, 53416, 66770, 89836, 106832, 112295, 133540, 179672, 224590, 247049, 267080, 359344, 449180, 494098, 534160, 898360, 988196, 1235245, 1796720, 1976392, 2470490, 3952784, 4940980, 9881960, 19763920]

約数ペア:

[(1, 19763920), (2, 9881960), (4, 4940980), (5, 3952784), (8, 2470490), (10, 1976392), (11, 1796720), (16, 1235245), (20, 988196), (22, 898360), (37, 534160), (40, 494098), (44, 449180), (55, 359344), (74, 267080), (80, 247049), (88, 224590), (110, 179672), (148, 133540), (176, 112295), (185, 106832), (220, 89836), (296, 66770), (370, 53416), (407, 48560), (440, 44918), (592, 33385), (607, 32560), (740, 26708), (814, 24280), (880, 22459), (1214, 16280), (1480, 13354), (1628, 12140), (2035, 9712), (2428, 8140), (2960, 6677), (3035, 6512), (3256, 6070), (4070, 4856)]