20904240

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{541}}^1$

素因数の和:587

約数の個数: 160

約数和(自身を含む): 77423616

約数和(自身を除く): 56519376

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 23, 24, 28, 30, 35, 40, 42, 46, 48, 56, 60, 69, 70, 80, 84, 92, 105, 112, 115, 120, 138, 140, 161, 168, 184, 210, 230, 240, 276, 280, 322, 336, 345, 368, 420, 460, 483, 541, 552, 560, 644, 690, 805, 840, 920, 966, 1082, 1104, 1288, 1380, 1610, 1623, 1680, 1840, 1932, 2164, 2415, 2576, 2705, 2760, 3220, 3246, 3787, 3864, 4328, 4830, 5410, 5520, 6440, 6492, 7574, 7728, 8115, 8656, 9660, 10820, 11361, 12443, 12880, 12984, 15148, 16230, 18935, 19320, 21640, 22722, 24886, 25968, 30296, 32460, 37329, 37870, 38640, 43280, 45444, 49772, 56805, 60592, 62215, 64920, 74658, 75740, 87101, 90888, 99544, 113610, 124430, 129840, 149316, 151480, 174202, 181776, 186645, 199088, 227220, 248860, 261303, 298632, 302960, 348404, 373290, 435505, 454440, 497720, 522606, 597264, 696808, 746580, 871010, 908880, 995440, 1045212, 1306515, 1393616, 1493160, 1742020, 2090424, 2613030, 2986320, 3484040, 4180848, 5226060, 6968080, 10452120, 20904240]

約数ペア:

[(1, 20904240), (2, 10452120), (3, 6968080), (4, 5226060), (5, 4180848), (6, 3484040), (7, 2986320), (8, 2613030), (10, 2090424), (12, 1742020), (14, 1493160), (15, 1393616), (16, 1306515), (20, 1045212), (21, 995440), (23, 908880), (24, 871010), (28, 746580), (30, 696808), (35, 597264), (40, 522606), (42, 497720), (46, 454440), (48, 435505), (56, 373290), (60, 348404), (69, 302960), (70, 298632), (80, 261303), (84, 248860), (92, 227220), (105, 199088), (112, 186645), (115, 181776), (120, 174202), (138, 151480), (140, 149316), (161, 129840), (168, 124430), (184, 113610), (210, 99544), (230, 90888), (240, 87101), (276, 75740), (280, 74658), (322, 64920), (336, 62215), (345, 60592), (368, 56805), (420, 49772), (460, 45444), (483, 43280), (541, 38640), (552, 37870), (560, 37329), (644, 32460), (690, 30296), (805, 25968), (840, 24886), (920, 22722), (966, 21640), (1082, 19320), (1104, 18935), (1288, 16230), (1380, 15148), (1610, 12984), (1623, 12880), (1680, 12443), (1840, 11361), (1932, 10820), (2164, 9660), (2415, 8656), (2576, 8115), (2705, 7728), (2760, 7574), (3220, 6492), (3246, 6440), (3787, 5520), (3864, 5410), (4328, 4830)]