28457520

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1303}}^1$

素因数の和:1339

約数の個数: 160

約数和(自身を含む): 108659712

約数和(自身を除く): 80202192

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 48, 52, 56, 60, 65, 70, 78, 80, 84, 91, 104, 105, 112, 120, 130, 140, 156, 168, 182, 195, 208, 210, 240, 260, 273, 280, 312, 336, 364, 390, 420, 455, 520, 546, 560, 624, 728, 780, 840, 910, 1040, 1092, 1303, 1365, 1456, 1560, 1680, 1820, 2184, 2606, 2730, 3120, 3640, 3909, 4368, 5212, 5460, 6515, 7280, 7818, 9121, 10424, 10920, 13030, 15636, 16939, 18242, 19545, 20848, 21840, 26060, 27363, 31272, 33878, 36484, 39090, 45605, 50817, 52120, 54726, 62544, 67756, 72968, 78180, 84695, 91210, 101634, 104240, 109452, 118573, 135512, 136815, 145936, 156360, 169390, 182420, 203268, 218904, 237146, 254085, 271024, 273630, 312720, 338780, 355719, 364840, 406536, 437808, 474292, 508170, 547260, 592865, 677560, 711438, 729680, 813072, 948584, 1016340, 1094520, 1185730, 1355120, 1422876, 1778595, 1897168, 2032680, 2189040, 2371460, 2845752, 3557190, 4065360, 4742920, 5691504, 7114380, 9485840, 14228760, 28457520]

約数ペア:

[(1, 28457520), (2, 14228760), (3, 9485840), (4, 7114380), (5, 5691504), (6, 4742920), (7, 4065360), (8, 3557190), (10, 2845752), (12, 2371460), (13, 2189040), (14, 2032680), (15, 1897168), (16, 1778595), (20, 1422876), (21, 1355120), (24, 1185730), (26, 1094520), (28, 1016340), (30, 948584), (35, 813072), (39, 729680), (40, 711438), (42, 677560), (48, 592865), (52, 547260), (56, 508170), (60, 474292), (65, 437808), (70, 406536), (78, 364840), (80, 355719), (84, 338780), (91, 312720), (104, 273630), (105, 271024), (112, 254085), (120, 237146), (130, 218904), (140, 203268), (156, 182420), (168, 169390), (182, 156360), (195, 145936), (208, 136815), (210, 135512), (240, 118573), (260, 109452), (273, 104240), (280, 101634), (312, 91210), (336, 84695), (364, 78180), (390, 72968), (420, 67756), (455, 62544), (520, 54726), (546, 52120), (560, 50817), (624, 45605), (728, 39090), (780, 36484), (840, 33878), (910, 31272), (1040, 27363), (1092, 26060), (1303, 21840), (1365, 20848), (1456, 19545), (1560, 18242), (1680, 16939), (1820, 15636), (2184, 13030), (2606, 10920), (2730, 10424), (3120, 9121), (3640, 7818), (3909, 7280), (4368, 6515), (5212, 5460)]