31291960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1$

素因数の和:197

約数の個数: 128

約数和(自身を含む): 86676480

約数和(自身を除く): 55384520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 43, 46, 56, 70, 86, 92, 113, 115, 140, 161, 172, 184, 215, 226, 230, 280, 301, 322, 344, 430, 452, 460, 565, 602, 644, 791, 805, 860, 904, 920, 989, 1130, 1204, 1288, 1505, 1582, 1610, 1720, 1978, 2260, 2408, 2599, 3010, 3164, 3220, 3955, 3956, 4520, 4859, 4945, 5198, 6020, 6328, 6440, 6923, 7910, 7912, 9718, 9890, 10396, 12040, 12995, 13846, 15820, 18193, 19436, 19780, 20792, 24295, 25990, 27692, 31640, 34013, 34615, 36386, 38872, 39560, 48590, 51980, 55384, 68026, 69230, 72772, 90965, 97180, 103960, 111757, 136052, 138460, 145544, 170065, 181930, 194360, 223514, 272104, 276920, 340130, 363860, 447028, 558785, 680260, 727720, 782299, 894056, 1117570, 1360520, 1564598, 2235140, 3129196, 3911495, 4470280, 6258392, 7822990, 15645980, 31291960]

約数ペア:

[(1, 31291960), (2, 15645980), (4, 7822990), (5, 6258392), (7, 4470280), (8, 3911495), (10, 3129196), (14, 2235140), (20, 1564598), (23, 1360520), (28, 1117570), (35, 894056), (40, 782299), (43, 727720), (46, 680260), (56, 558785), (70, 447028), (86, 363860), (92, 340130), (113, 276920), (115, 272104), (140, 223514), (161, 194360), (172, 181930), (184, 170065), (215, 145544), (226, 138460), (230, 136052), (280, 111757), (301, 103960), (322, 97180), (344, 90965), (430, 72772), (452, 69230), (460, 68026), (565, 55384), (602, 51980), (644, 48590), (791, 39560), (805, 38872), (860, 36386), (904, 34615), (920, 34013), (989, 31640), (1130, 27692), (1204, 25990), (1288, 24295), (1505, 20792), (1582, 19780), (1610, 19436), (1720, 18193), (1978, 15820), (2260, 13846), (2408, 12995), (2599, 12040), (3010, 10396), (3164, 9890), (3220, 9718), (3955, 7912), (3956, 7910), (4520, 6923), (4859, 6440), (4945, 6328), (5198, 6020)]