18719680

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:222

約数の個数: 112

約数和(自身を含む): 52157376

約数和(自身を除く): 33437696

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 61, 64, 70, 80, 112, 122, 137, 140, 160, 224, 244, 274, 280, 305, 320, 427, 448, 488, 548, 560, 610, 685, 854, 959, 976, 1096, 1120, 1220, 1370, 1708, 1918, 1952, 2135, 2192, 2240, 2440, 2740, 3416, 3836, 3904, 4270, 4384, 4795, 4880, 5480, 6832, 7672, 8357, 8540, 8768, 9590, 9760, 10960, 13664, 15344, 16714, 17080, 19180, 19520, 21920, 27328, 30688, 33428, 34160, 38360, 41785, 43840, 58499, 61376, 66856, 68320, 76720, 83570, 116998, 133712, 136640, 153440, 167140, 233996, 267424, 292495, 306880, 334280, 467992, 534848, 584990, 668560, 935984, 1169980, 1337120, 1871968, 2339960, 2674240, 3743936, 4679920, 9359840, 18719680]

約数ペア:

[(1, 18719680), (2, 9359840), (4, 4679920), (5, 3743936), (7, 2674240), (8, 2339960), (10, 1871968), (14, 1337120), (16, 1169980), (20, 935984), (28, 668560), (32, 584990), (35, 534848), (40, 467992), (56, 334280), (61, 306880), (64, 292495), (70, 267424), (80, 233996), (112, 167140), (122, 153440), (137, 136640), (140, 133712), (160, 116998), (224, 83570), (244, 76720), (274, 68320), (280, 66856), (305, 61376), (320, 58499), (427, 43840), (448, 41785), (488, 38360), (548, 34160), (560, 33428), (610, 30688), (685, 27328), (854, 21920), (959, 19520), (976, 19180), (1096, 17080), (1120, 16714), (1220, 15344), (1370, 13664), (1708, 10960), (1918, 9760), (1952, 9590), (2135, 8768), (2192, 8540), (2240, 8357), (2440, 7672), (2740, 6832), (3416, 5480), (3836, 4880), (3904, 4795), (4270, 4384)]