31991440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1619}}^1$

素因数の和:1664

約数の個数: 80

約数和(自身を含む): 84369600

約数和(自身を除く): 52378160

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 988, 1040, 1235, 1520, 1619, 1976, 2470, 3238, 3952, 4940, 6476, 8095, 9880, 12952, 16190, 19760, 21047, 25904, 30761, 32380, 42094, 61522, 64760, 84188, 105235, 123044, 129520, 153805, 168376, 210470, 246088, 307610, 336752, 399893, 420940, 492176, 615220, 799786, 841880, 1230440, 1599572, 1683760, 1999465, 2460880, 3199144, 3998930, 6398288, 7997860, 15995720, 31991440]

約数ペア:

[(1, 31991440), (2, 15995720), (4, 7997860), (5, 6398288), (8, 3998930), (10, 3199144), (13, 2460880), (16, 1999465), (19, 1683760), (20, 1599572), (26, 1230440), (38, 841880), (40, 799786), (52, 615220), (65, 492176), (76, 420940), (80, 399893), (95, 336752), (104, 307610), (130, 246088), (152, 210470), (190, 168376), (208, 153805), (247, 129520), (260, 123044), (304, 105235), (380, 84188), (494, 64760), (520, 61522), (760, 42094), (988, 32380), (1040, 30761), (1235, 25904), (1520, 21047), (1619, 19760), (1976, 16190), (2470, 12952), (3238, 9880), (3952, 8095), (4940, 6476)]