31383275

素因数分解:

$5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1$

素因数の和:189

約数の個数: 72

約数和(自身を含む): 52670736

約数和(自身を除く): 21287461

約数列:

[1, 5, 7, 11, 17, 25, 35, 49, 55, 77, 85, 119, 137, 175, 187, 245, 275, 385, 425, 539, 595, 685, 833, 935, 959, 1225, 1309, 1507, 1925, 2329, 2695, 2975, 3425, 4165, 4675, 4795, 6545, 6713, 7535, 9163, 10549, 11645, 13475, 16303, 20825, 23975, 25619, 32725, 33565, 37675, 45815, 52745, 58225, 73843, 81515, 114121, 128095, 167825, 179333, 229075, 263725, 369215, 407575, 570605, 640475, 896665, 1255331, 1846075, 2853025, 4483325, 6276655, 31383275]

約数ペア:

[(1, 31383275), (5, 6276655), (7, 4483325), (11, 2853025), (17, 1846075), (25, 1255331), (35, 896665), (49, 640475), (55, 570605), (77, 407575), (85, 369215), (119, 263725), (137, 229075), (175, 179333), (187, 167825), (245, 128095), (275, 114121), (385, 81515), (425, 73843), (539, 58225), (595, 52745), (685, 45815), (833, 37675), (935, 33565), (959, 32725), (1225, 25619), (1309, 23975), (1507, 20825), (1925, 16303), (2329, 13475), (2695, 11645), (2975, 10549), (3425, 9163), (4165, 7535), (4675, 6713), (4795, 6545)]