31687136

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{211}}^1$

素因数の和:272

約数の個数: 72

約数和(自身を含む): 71240904

約数和(自身を除く): 39553768

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 76, 104, 152, 208, 211, 247, 304, 361, 416, 422, 494, 608, 722, 844, 988, 1444, 1688, 1976, 2743, 2888, 3376, 3952, 4009, 4693, 5486, 5776, 6752, 7904, 8018, 9386, 10972, 11552, 16036, 18772, 21944, 32072, 37544, 43888, 52117, 64144, 75088, 76171, 87776, 104234, 128288, 150176, 152342, 208468, 304684, 416936, 609368, 833872, 990223, 1218736, 1667744, 1980446, 2437472, 3960892, 7921784, 15843568, 31687136]

約数ペア:

[(1, 31687136), (2, 15843568), (4, 7921784), (8, 3960892), (13, 2437472), (16, 1980446), (19, 1667744), (26, 1218736), (32, 990223), (38, 833872), (52, 609368), (76, 416936), (104, 304684), (152, 208468), (208, 152342), (211, 150176), (247, 128288), (304, 104234), (361, 87776), (416, 76171), (422, 75088), (494, 64144), (608, 52117), (722, 43888), (844, 37544), (988, 32072), (1444, 21944), (1688, 18772), (1976, 16036), (2743, 11552), (2888, 10972), (3376, 9386), (3952, 8018), (4009, 7904), (4693, 6752), (5486, 5776)]