18528640

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1$

素因数の和:180

約数の個数: 128

約数和(自身を含む): 50893920

約数和(自身を除く): 32365280

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 32, 34, 40, 52, 64, 65, 68, 80, 85, 104, 128, 130, 131, 136, 160, 170, 208, 221, 260, 262, 272, 320, 340, 416, 442, 520, 524, 544, 640, 655, 680, 832, 884, 1040, 1048, 1088, 1105, 1310, 1360, 1664, 1703, 1768, 2080, 2096, 2176, 2210, 2227, 2620, 2720, 3406, 3536, 4160, 4192, 4420, 4454, 5240, 5440, 6812, 7072, 8320, 8384, 8515, 8840, 8908, 10480, 10880, 11135, 13624, 14144, 16768, 17030, 17680, 17816, 20960, 22270, 27248, 28288, 28951, 34060, 35360, 35632, 41920, 44540, 54496, 57902, 68120, 70720, 71264, 83840, 89080, 108992, 115804, 136240, 141440, 142528, 144755, 178160, 217984, 231608, 272480, 285056, 289510, 356320, 463216, 544960, 579020, 712640, 926432, 1089920, 1158040, 1425280, 1852864, 2316080, 3705728, 4632160, 9264320, 18528640]

約数ペア:

[(1, 18528640), (2, 9264320), (4, 4632160), (5, 3705728), (8, 2316080), (10, 1852864), (13, 1425280), (16, 1158040), (17, 1089920), (20, 926432), (26, 712640), (32, 579020), (34, 544960), (40, 463216), (52, 356320), (64, 289510), (65, 285056), (68, 272480), (80, 231608), (85, 217984), (104, 178160), (128, 144755), (130, 142528), (131, 141440), (136, 136240), (160, 115804), (170, 108992), (208, 89080), (221, 83840), (260, 71264), (262, 70720), (272, 68120), (320, 57902), (340, 54496), (416, 44540), (442, 41920), (520, 35632), (524, 35360), (544, 34060), (640, 28951), (655, 28288), (680, 27248), (832, 22270), (884, 20960), (1040, 17816), (1048, 17680), (1088, 17030), (1105, 16768), (1310, 14144), (1360, 13624), (1664, 11135), (1703, 10880), (1768, 10480), (2080, 8908), (2096, 8840), (2176, 8515), (2210, 8384), (2227, 8320), (2620, 7072), (2720, 6812), (3406, 5440), (3536, 5240), (4160, 4454), (4192, 4420)]