20431840

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1$

素因数の和:105

約数の個数: 192

約数和(自身を含む): 60963840

約数和(自身を除く): 40532000

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 19, 20, 22, 26, 32, 38, 40, 44, 47, 52, 55, 65, 76, 80, 88, 94, 95, 104, 110, 130, 143, 152, 160, 176, 188, 190, 208, 209, 220, 235, 247, 260, 286, 304, 352, 376, 380, 416, 418, 440, 470, 494, 517, 520, 572, 608, 611, 715, 752, 760, 836, 880, 893, 940, 988, 1034, 1040, 1045, 1144, 1222, 1235, 1430, 1504, 1520, 1672, 1760, 1786, 1880, 1976, 2068, 2080, 2090, 2288, 2444, 2470, 2585, 2717, 2860, 3040, 3055, 3344, 3572, 3760, 3952, 4136, 4180, 4465, 4576, 4888, 4940, 5170, 5434, 5720, 6110, 6688, 6721, 7144, 7520, 7904, 8272, 8360, 8930, 9776, 9823, 9880, 10340, 10868, 11440, 11609, 12220, 13442, 13585, 14288, 16544, 16720, 17860, 19552, 19646, 19760, 20680, 21736, 22880, 23218, 24440, 26884, 27170, 28576, 33440, 33605, 35720, 39292, 39520, 41360, 43472, 46436, 48880, 49115, 53768, 54340, 58045, 67210, 71440, 78584, 82720, 86944, 92872, 97760, 98230, 107536, 108680, 116090, 127699, 134420, 142880, 157168, 185744, 196460, 215072, 217360, 232180, 255398, 268840, 314336, 371488, 392920, 434720, 464360, 510796, 537680, 638495, 785840, 928720, 1021592, 1075360, 1276990, 1571680, 1857440, 2043184, 2553980, 4086368, 5107960, 10215920, 20431840]

約数ペア:

[(1, 20431840), (2, 10215920), (4, 5107960), (5, 4086368), (8, 2553980), (10, 2043184), (11, 1857440), (13, 1571680), (16, 1276990), (19, 1075360), (20, 1021592), (22, 928720), (26, 785840), (32, 638495), (38, 537680), (40, 510796), (44, 464360), (47, 434720), (52, 392920), (55, 371488), (65, 314336), (76, 268840), (80, 255398), (88, 232180), (94, 217360), (95, 215072), (104, 196460), (110, 185744), (130, 157168), (143, 142880), (152, 134420), (160, 127699), (176, 116090), (188, 108680), (190, 107536), (208, 98230), (209, 97760), (220, 92872), (235, 86944), (247, 82720), (260, 78584), (286, 71440), (304, 67210), (352, 58045), (376, 54340), (380, 53768), (416, 49115), (418, 48880), (440, 46436), (470, 43472), (494, 41360), (517, 39520), (520, 39292), (572, 35720), (608, 33605), (611, 33440), (715, 28576), (752, 27170), (760, 26884), (836, 24440), (880, 23218), (893, 22880), (940, 21736), (988, 20680), (1034, 19760), (1040, 19646), (1045, 19552), (1144, 17860), (1222, 16720), (1235, 16544), (1430, 14288), (1504, 13585), (1520, 13442), (1672, 12220), (1760, 11609), (1786, 11440), (1880, 10868), (1976, 10340), (2068, 9880), (2080, 9823), (2090, 9776), (2288, 8930), (2444, 8360), (2470, 8272), (2585, 7904), (2717, 7520), (2860, 7144), (3040, 6721), (3055, 6688), (3344, 6110), (3572, 5720), (3760, 5434), (3952, 5170), (4136, 4940), (4180, 4888), (4465, 4576)]