18715840

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1$

素因数の和:450

約数の個数: 112

約数和(自身を含む): 52486560

約数和(自身を除く): 33770720

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 32, 40, 44, 52, 55, 64, 65, 80, 88, 104, 110, 130, 143, 160, 176, 208, 220, 260, 286, 320, 352, 409, 416, 440, 520, 572, 704, 715, 818, 832, 880, 1040, 1144, 1430, 1636, 1760, 2045, 2080, 2288, 2860, 3272, 3520, 4090, 4160, 4499, 4576, 5317, 5720, 6544, 8180, 8998, 9152, 10634, 11440, 13088, 16360, 17996, 21268, 22495, 22880, 26176, 26585, 32720, 35992, 42536, 44990, 45760, 53170, 58487, 65440, 71984, 85072, 89980, 106340, 116974, 130880, 143968, 170144, 179960, 212680, 233948, 287936, 292435, 340288, 359920, 425360, 467896, 584870, 719840, 850720, 935792, 1169740, 1439680, 1701440, 1871584, 2339480, 3743168, 4678960, 9357920, 18715840]

約数ペア:

[(1, 18715840), (2, 9357920), (4, 4678960), (5, 3743168), (8, 2339480), (10, 1871584), (11, 1701440), (13, 1439680), (16, 1169740), (20, 935792), (22, 850720), (26, 719840), (32, 584870), (40, 467896), (44, 425360), (52, 359920), (55, 340288), (64, 292435), (65, 287936), (80, 233948), (88, 212680), (104, 179960), (110, 170144), (130, 143968), (143, 130880), (160, 116974), (176, 106340), (208, 89980), (220, 85072), (260, 71984), (286, 65440), (320, 58487), (352, 53170), (409, 45760), (416, 44990), (440, 42536), (520, 35992), (572, 32720), (704, 26585), (715, 26176), (818, 22880), (832, 22495), (880, 21268), (1040, 17996), (1144, 16360), (1430, 13088), (1636, 11440), (1760, 10634), (2045, 9152), (2080, 8998), (2288, 8180), (2860, 6544), (3272, 5720), (3520, 5317), (4090, 4576), (4160, 4499)]