81403830

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{179}}^1$

素因数の和:386

約数の個数: 96

約数和(自身を含む): 221045760

約数和(自身を除く): 139641930

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 31, 45, 62, 90, 93, 155, 163, 179, 186, 279, 310, 326, 358, 465, 489, 537, 558, 815, 895, 930, 978, 1074, 1395, 1467, 1611, 1630, 1790, 2445, 2685, 2790, 2934, 3222, 4890, 5053, 5370, 5549, 7335, 8055, 10106, 11098, 14670, 15159, 16110, 16647, 25265, 27745, 29177, 30318, 33294, 45477, 49941, 50530, 55490, 58354, 75795, 83235, 87531, 90954, 99882, 145885, 151590, 166470, 175062, 227385, 249705, 262593, 291770, 437655, 454770, 499410, 525186, 875310, 904487, 1312965, 1808974, 2625930, 2713461, 4522435, 5426922, 8140383, 9044870, 13567305, 16280766, 27134610, 40701915, 81403830]

約数ペア:

[(1, 81403830), (2, 40701915), (3, 27134610), (5, 16280766), (6, 13567305), (9, 9044870), (10, 8140383), (15, 5426922), (18, 4522435), (30, 2713461), (31, 2625930), (45, 1808974), (62, 1312965), (90, 904487), (93, 875310), (155, 525186), (163, 499410), (179, 454770), (186, 437655), (279, 291770), (310, 262593), (326, 249705), (358, 227385), (465, 175062), (489, 166470), (537, 151590), (558, 145885), (815, 99882), (895, 90954), (930, 87531), (978, 83235), (1074, 75795), (1395, 58354), (1467, 55490), (1611, 50530), (1630, 49941), (1790, 45477), (2445, 33294), (2685, 30318), (2790, 29177), (2934, 27745), (3222, 25265), (4890, 16647), (5053, 16110), (5370, 15159), (5549, 14670), (7335, 11098), (8055, 10106)]