31987260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1$

素因数の和:280

約数の個数: 144

約数和(自身を含む): 104832000

約数和(自身を除く): 72844740

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 47, 57, 60, 76, 90, 94, 95, 114, 141, 171, 180, 188, 190, 199, 228, 235, 282, 285, 342, 380, 398, 423, 470, 564, 570, 597, 684, 705, 796, 846, 855, 893, 940, 995, 1140, 1194, 1410, 1692, 1710, 1786, 1791, 1990, 2115, 2388, 2679, 2820, 2985, 3420, 3572, 3582, 3781, 3980, 4230, 4465, 5358, 5970, 7164, 7562, 8037, 8460, 8930, 8955, 9353, 10716, 11343, 11940, 13395, 15124, 16074, 17860, 17910, 18706, 18905, 22686, 26790, 28059, 32148, 34029, 35820, 37412, 37810, 40185, 45372, 46765, 53580, 56118, 56715, 68058, 75620, 80370, 84177, 93530, 112236, 113430, 136116, 140295, 160740, 168354, 170145, 177707, 187060, 226860, 280590, 336708, 340290, 355414, 420885, 533121, 561180, 680580, 710828, 841770, 888535, 1066242, 1599363, 1683540, 1777070, 2132484, 2665605, 3198726, 3554140, 5331210, 6397452, 7996815, 10662420, 15993630, 31987260]

約数ペア:

[(1, 31987260), (2, 15993630), (3, 10662420), (4, 7996815), (5, 6397452), (6, 5331210), (9, 3554140), (10, 3198726), (12, 2665605), (15, 2132484), (18, 1777070), (19, 1683540), (20, 1599363), (30, 1066242), (36, 888535), (38, 841770), (45, 710828), (47, 680580), (57, 561180), (60, 533121), (76, 420885), (90, 355414), (94, 340290), (95, 336708), (114, 280590), (141, 226860), (171, 187060), (180, 177707), (188, 170145), (190, 168354), (199, 160740), (228, 140295), (235, 136116), (282, 113430), (285, 112236), (342, 93530), (380, 84177), (398, 80370), (423, 75620), (470, 68058), (564, 56715), (570, 56118), (597, 53580), (684, 46765), (705, 45372), (796, 40185), (846, 37810), (855, 37412), (893, 35820), (940, 34029), (995, 32148), (1140, 28059), (1194, 26790), (1410, 22686), (1692, 18905), (1710, 18706), (1786, 17910), (1791, 17860), (1990, 16074), (2115, 15124), (2388, 13395), (2679, 11940), (2820, 11343), (2985, 10716), (3420, 9353), (3572, 8955), (3582, 8930), (3781, 8460), (3980, 8037), (4230, 7562), (4465, 7164), (5358, 5970)]