21671520

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{151}}^1$

素因数の和:205

約数の個数: 192

約数和(自身を含む): 77220864

約数和(自身を除く): 55549344

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 23, 24, 26, 30, 32, 39, 40, 46, 48, 52, 60, 65, 69, 78, 80, 92, 96, 104, 115, 120, 130, 138, 151, 156, 160, 184, 195, 208, 230, 240, 260, 276, 299, 302, 312, 345, 368, 390, 416, 453, 460, 480, 520, 552, 598, 604, 624, 690, 736, 755, 780, 897, 906, 920, 1040, 1104, 1196, 1208, 1248, 1380, 1495, 1510, 1560, 1794, 1812, 1840, 1963, 2080, 2208, 2265, 2392, 2416, 2760, 2990, 3020, 3120, 3473, 3588, 3624, 3680, 3926, 4485, 4530, 4784, 4832, 5520, 5889, 5980, 6040, 6240, 6946, 7176, 7248, 7852, 8970, 9060, 9568, 9815, 10419, 11040, 11778, 11960, 12080, 13892, 14352, 14496, 15704, 17365, 17940, 18120, 19630, 20838, 23556, 23920, 24160, 27784, 28704, 29445, 31408, 34730, 35880, 36240, 39260, 41676, 45149, 47112, 47840, 52095, 55568, 58890, 62816, 69460, 71760, 72480, 78520, 83352, 90298, 94224, 104190, 111136, 117780, 135447, 138920, 143520, 157040, 166704, 180596, 188448, 208380, 225745, 235560, 270894, 277840, 314080, 333408, 361192, 416760, 451490, 471120, 541788, 555680, 677235, 722384, 833520, 902980, 942240, 1083576, 1354470, 1444768, 1667040, 1805960, 2167152, 2708940, 3611920, 4334304, 5417880, 7223840, 10835760, 21671520]

約数ペア:

[(1, 21671520), (2, 10835760), (3, 7223840), (4, 5417880), (5, 4334304), (6, 3611920), (8, 2708940), (10, 2167152), (12, 1805960), (13, 1667040), (15, 1444768), (16, 1354470), (20, 1083576), (23, 942240), (24, 902980), (26, 833520), (30, 722384), (32, 677235), (39, 555680), (40, 541788), (46, 471120), (48, 451490), (52, 416760), (60, 361192), (65, 333408), (69, 314080), (78, 277840), (80, 270894), (92, 235560), (96, 225745), (104, 208380), (115, 188448), (120, 180596), (130, 166704), (138, 157040), (151, 143520), (156, 138920), (160, 135447), (184, 117780), (195, 111136), (208, 104190), (230, 94224), (240, 90298), (260, 83352), (276, 78520), (299, 72480), (302, 71760), (312, 69460), (345, 62816), (368, 58890), (390, 55568), (416, 52095), (453, 47840), (460, 47112), (480, 45149), (520, 41676), (552, 39260), (598, 36240), (604, 35880), (624, 34730), (690, 31408), (736, 29445), (755, 28704), (780, 27784), (897, 24160), (906, 23920), (920, 23556), (1040, 20838), (1104, 19630), (1196, 18120), (1208, 17940), (1248, 17365), (1380, 15704), (1495, 14496), (1510, 14352), (1560, 13892), (1794, 12080), (1812, 11960), (1840, 11778), (1963, 11040), (2080, 10419), (2208, 9815), (2265, 9568), (2392, 9060), (2416, 8970), (2760, 7852), (2990, 7248), (3020, 7176), (3120, 6946), (3473, 6240), (3588, 6040), (3624, 5980), (3680, 5889), (3926, 5520), (4485, 4832), (4530, 4784)]