19872320

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{281}}^1$

素因数の和:328

約数の個数: 112

約数和(自身を含む): 54150768

約数和(自身を除く): 34278448

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 32, 34, 40, 52, 64, 65, 68, 80, 85, 104, 130, 136, 160, 170, 208, 221, 260, 272, 281, 320, 340, 416, 442, 520, 544, 562, 680, 832, 884, 1040, 1088, 1105, 1124, 1360, 1405, 1768, 2080, 2210, 2248, 2720, 2810, 3536, 3653, 4160, 4420, 4496, 4777, 5440, 5620, 7072, 7306, 8840, 8992, 9554, 11240, 14144, 14612, 17680, 17984, 18265, 19108, 22480, 23885, 29224, 35360, 36530, 38216, 44960, 47770, 58448, 62101, 70720, 73060, 76432, 89920, 95540, 116896, 124202, 146120, 152864, 191080, 233792, 248404, 292240, 305728, 310505, 382160, 496808, 584480, 621010, 764320, 993616, 1168960, 1242020, 1528640, 1987232, 2484040, 3974464, 4968080, 9936160, 19872320]

約数ペア:

[(1, 19872320), (2, 9936160), (4, 4968080), (5, 3974464), (8, 2484040), (10, 1987232), (13, 1528640), (16, 1242020), (17, 1168960), (20, 993616), (26, 764320), (32, 621010), (34, 584480), (40, 496808), (52, 382160), (64, 310505), (65, 305728), (68, 292240), (80, 248404), (85, 233792), (104, 191080), (130, 152864), (136, 146120), (160, 124202), (170, 116896), (208, 95540), (221, 89920), (260, 76432), (272, 73060), (281, 70720), (320, 62101), (340, 58448), (416, 47770), (442, 44960), (520, 38216), (544, 36530), (562, 35360), (680, 29224), (832, 23885), (884, 22480), (1040, 19108), (1088, 18265), (1105, 17984), (1124, 17680), (1360, 14612), (1405, 14144), (1768, 11240), (2080, 9554), (2210, 8992), (2248, 8840), (2720, 7306), (2810, 7072), (3536, 5620), (3653, 5440), (4160, 4777), (4420, 4496)]