20542320

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{277}}^1$

素因数の和:399

約数の個数: 120

約数和(自身を含む): 69909216

約数和(自身を除く): 49366896

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 103, 120, 144, 180, 206, 240, 277, 309, 360, 412, 515, 554, 618, 720, 824, 831, 927, 1030, 1108, 1236, 1385, 1545, 1648, 1662, 1854, 2060, 2216, 2472, 2493, 2770, 3090, 3324, 3708, 4120, 4155, 4432, 4635, 4944, 4986, 5540, 6180, 6648, 7416, 8240, 8310, 9270, 9972, 11080, 12360, 12465, 13296, 14832, 16620, 18540, 19944, 22160, 24720, 24930, 28531, 33240, 37080, 39888, 49860, 57062, 66480, 74160, 85593, 99720, 114124, 142655, 171186, 199440, 228248, 256779, 285310, 342372, 427965, 456496, 513558, 570620, 684744, 855930, 1027116, 1141240, 1283895, 1369488, 1711860, 2054232, 2282480, 2567790, 3423720, 4108464, 5135580, 6847440, 10271160, 20542320]

約数ペア:

[(1, 20542320), (2, 10271160), (3, 6847440), (4, 5135580), (5, 4108464), (6, 3423720), (8, 2567790), (9, 2282480), (10, 2054232), (12, 1711860), (15, 1369488), (16, 1283895), (18, 1141240), (20, 1027116), (24, 855930), (30, 684744), (36, 570620), (40, 513558), (45, 456496), (48, 427965), (60, 342372), (72, 285310), (80, 256779), (90, 228248), (103, 199440), (120, 171186), (144, 142655), (180, 114124), (206, 99720), (240, 85593), (277, 74160), (309, 66480), (360, 57062), (412, 49860), (515, 39888), (554, 37080), (618, 33240), (720, 28531), (824, 24930), (831, 24720), (927, 22160), (1030, 19944), (1108, 18540), (1236, 16620), (1385, 14832), (1545, 13296), (1648, 12465), (1662, 12360), (1854, 11080), (2060, 9972), (2216, 9270), (2472, 8310), (2493, 8240), (2770, 7416), (3090, 6648), (3324, 6180), (3708, 5540), (4120, 4986), (4155, 4944), (4432, 4635)]