28019680

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{709}}^1$

素因数の和:756

約数の個数: 96

約数和(自身を含む): 75146400

約数和(自身を除く): 47126720

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 32, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 160, 190, 208, 247, 260, 304, 380, 416, 494, 520, 608, 709, 760, 988, 1040, 1235, 1418, 1520, 1976, 2080, 2470, 2836, 3040, 3545, 3952, 4940, 5672, 7090, 7904, 9217, 9880, 11344, 13471, 14180, 18434, 19760, 22688, 26942, 28360, 36868, 39520, 46085, 53884, 56720, 67355, 73736, 92170, 107768, 113440, 134710, 147472, 175123, 184340, 215536, 269420, 294944, 350246, 368680, 431072, 538840, 700492, 737360, 875615, 1077680, 1400984, 1474720, 1751230, 2155360, 2801968, 3502460, 5603936, 7004920, 14009840, 28019680]

約数ペア:

[(1, 28019680), (2, 14009840), (4, 7004920), (5, 5603936), (8, 3502460), (10, 2801968), (13, 2155360), (16, 1751230), (19, 1474720), (20, 1400984), (26, 1077680), (32, 875615), (38, 737360), (40, 700492), (52, 538840), (65, 431072), (76, 368680), (80, 350246), (95, 294944), (104, 269420), (130, 215536), (152, 184340), (160, 175123), (190, 147472), (208, 134710), (247, 113440), (260, 107768), (304, 92170), (380, 73736), (416, 67355), (494, 56720), (520, 53884), (608, 46085), (709, 39520), (760, 36868), (988, 28360), (1040, 26942), (1235, 22688), (1418, 19760), (1520, 18434), (1976, 14180), (2080, 13471), (2470, 11344), (2836, 9880), (3040, 9217), (3545, 7904), (3952, 7090), (4940, 5672)]