20838960

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{281}}^1$

素因数の和:403

約数の個数: 120

約数和(自身を含む): 70915104

約数和(自身を除く): 50076144

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, 281, 309, 360, 412, 515, 562, 618, 720, 824, 843, 927, 1030, 1124, 1236, 1405, 1545, 1648, 1686, 1854, 2060, 2248, 2472, 2529, 2810, 3090, 3372, 3708, 4120, 4215, 4496, 4635, 4944, 5058, 5620, 6180, 6744, 7416, 8240, 8430, 9270, 10116, 11240, 12360, 12645, 13488, 14832, 16860, 18540, 20232, 22480, 24720, 25290, 28943, 33720, 37080, 40464, 50580, 57886, 67440, 74160, 86829, 101160, 115772, 144715, 173658, 202320, 231544, 260487, 289430, 347316, 434145, 463088, 520974, 578860, 694632, 868290, 1041948, 1157720, 1302435, 1389264, 1736580, 2083896, 2315440, 2604870, 3473160, 4167792, 5209740, 6946320, 10419480, 20838960]

約数ペア:

[(1, 20838960), (2, 10419480), (3, 6946320), (4, 5209740), (5, 4167792), (6, 3473160), (8, 2604870), (9, 2315440), (10, 2083896), (12, 1736580), (15, 1389264), (16, 1302435), (18, 1157720), (20, 1041948), (24, 868290), (30, 694632), (36, 578860), (40, 520974), (45, 463088), (48, 434145), (60, 347316), (72, 289430), (80, 260487), (90, 231544), (103, 202320), (120, 173658), (144, 144715), (180, 115772), (206, 101160), (240, 86829), (281, 74160), (309, 67440), (360, 57886), (412, 50580), (515, 40464), (562, 37080), (618, 33720), (720, 28943), (824, 25290), (843, 24720), (927, 22480), (1030, 20232), (1124, 18540), (1236, 16860), (1405, 14832), (1545, 13488), (1648, 12645), (1686, 12360), (1854, 11240), (2060, 10116), (2248, 9270), (2472, 8430), (2529, 8240), (2810, 7416), (3090, 6744), (3372, 6180), (3708, 5620), (4120, 5058), (4215, 4944), (4496, 4635)]