20653760

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:158

約数の個数: 112

約数和(自身を含む): 53644800

約数和(自身を除く): 32991040

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 43, 64, 76, 79, 80, 86, 95, 152, 158, 160, 172, 190, 215, 304, 316, 320, 344, 380, 395, 430, 608, 632, 688, 760, 790, 817, 860, 1216, 1264, 1376, 1501, 1520, 1580, 1634, 1720, 2528, 2752, 3002, 3040, 3160, 3268, 3397, 3440, 4085, 5056, 6004, 6080, 6320, 6536, 6794, 6880, 7505, 8170, 12008, 12640, 13072, 13588, 13760, 15010, 16340, 16985, 24016, 25280, 26144, 27176, 30020, 32680, 33970, 48032, 52288, 54352, 60040, 64543, 65360, 67940, 96064, 108704, 120080, 129086, 130720, 135880, 217408, 240160, 258172, 261440, 271760, 322715, 480320, 516344, 543520, 645430, 1032688, 1087040, 1290860, 2065376, 2581720, 4130752, 5163440, 10326880, 20653760]

約数ペア:

[(1, 20653760), (2, 10326880), (4, 5163440), (5, 4130752), (8, 2581720), (10, 2065376), (16, 1290860), (19, 1087040), (20, 1032688), (32, 645430), (38, 543520), (40, 516344), (43, 480320), (64, 322715), (76, 271760), (79, 261440), (80, 258172), (86, 240160), (95, 217408), (152, 135880), (158, 130720), (160, 129086), (172, 120080), (190, 108704), (215, 96064), (304, 67940), (316, 65360), (320, 64543), (344, 60040), (380, 54352), (395, 52288), (430, 48032), (608, 33970), (632, 32680), (688, 30020), (760, 27176), (790, 26144), (817, 25280), (860, 24016), (1216, 16985), (1264, 16340), (1376, 15010), (1501, 13760), (1520, 13588), (1580, 13072), (1634, 12640), (1720, 12008), (2528, 8170), (2752, 7505), (3002, 6880), (3040, 6794), (3160, 6536), (3268, 6320), (3397, 6080), (3440, 6004), (4085, 5056)]