31181280

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1$

素因数の和:313

約数の個数: 192

約数和(自身を含む): 111767040

約数和(自身を除く): 80585760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 19, 20, 24, 26, 30, 32, 38, 39, 40, 48, 52, 57, 60, 65, 76, 78, 80, 95, 96, 104, 114, 120, 130, 152, 156, 160, 190, 195, 208, 228, 240, 247, 260, 263, 285, 304, 312, 380, 390, 416, 456, 480, 494, 520, 526, 570, 608, 624, 741, 760, 780, 789, 912, 988, 1040, 1052, 1140, 1235, 1248, 1315, 1482, 1520, 1560, 1578, 1824, 1976, 2080, 2104, 2280, 2470, 2630, 2964, 3040, 3120, 3156, 3419, 3705, 3945, 3952, 4208, 4560, 4940, 4997, 5260, 5928, 6240, 6312, 6838, 7410, 7890, 7904, 8416, 9120, 9880, 9994, 10257, 10520, 11856, 12624, 13676, 14820, 14991, 15780, 17095, 19760, 19988, 20514, 21040, 23712, 24985, 25248, 27352, 29640, 29982, 31560, 34190, 39520, 39976, 41028, 42080, 49970, 51285, 54704, 59280, 59964, 63120, 64961, 68380, 74955, 79952, 82056, 99940, 102570, 109408, 118560, 119928, 126240, 129922, 136760, 149910, 159904, 164112, 194883, 199880, 205140, 239856, 259844, 273520, 299820, 324805, 328224, 389766, 399760, 410280, 479712, 519688, 547040, 599640, 649610, 779532, 799520, 820560, 974415, 1039376, 1199280, 1299220, 1559064, 1641120, 1948830, 2078752, 2398560, 2598440, 3118128, 3897660, 5196880, 6236256, 7795320, 10393760, 15590640, 31181280]

約数ペア:

[(1, 31181280), (2, 15590640), (3, 10393760), (4, 7795320), (5, 6236256), (6, 5196880), (8, 3897660), (10, 3118128), (12, 2598440), (13, 2398560), (15, 2078752), (16, 1948830), (19, 1641120), (20, 1559064), (24, 1299220), (26, 1199280), (30, 1039376), (32, 974415), (38, 820560), (39, 799520), (40, 779532), (48, 649610), (52, 599640), (57, 547040), (60, 519688), (65, 479712), (76, 410280), (78, 399760), (80, 389766), (95, 328224), (96, 324805), (104, 299820), (114, 273520), (120, 259844), (130, 239856), (152, 205140), (156, 199880), (160, 194883), (190, 164112), (195, 159904), (208, 149910), (228, 136760), (240, 129922), (247, 126240), (260, 119928), (263, 118560), (285, 109408), (304, 102570), (312, 99940), (380, 82056), (390, 79952), (416, 74955), (456, 68380), (480, 64961), (494, 63120), (520, 59964), (526, 59280), (570, 54704), (608, 51285), (624, 49970), (741, 42080), (760, 41028), (780, 39976), (789, 39520), (912, 34190), (988, 31560), (1040, 29982), (1052, 29640), (1140, 27352), (1235, 25248), (1248, 24985), (1315, 23712), (1482, 21040), (1520, 20514), (1560, 19988), (1578, 19760), (1824, 17095), (1976, 15780), (2080, 14991), (2104, 14820), (2280, 13676), (2470, 12624), (2630, 11856), (2964, 10520), (3040, 10257), (3120, 9994), (3156, 9880), (3419, 9120), (3705, 8416), (3945, 7904), (3952, 7890), (4208, 7410), (4560, 6838), (4940, 6312), (4997, 6240), (5260, 5928)]