19901280

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{5923}}^1$

素因数の和:5948

約数の個数: 96

約数和(自身を含む): 71656704

約数和(自身を除く): 51755424

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 70, 80, 84, 96, 105, 112, 120, 140, 160, 168, 210, 224, 240, 280, 336, 420, 480, 560, 672, 840, 1120, 1680, 3360, 5923, 11846, 17769, 23692, 29615, 35538, 41461, 47384, 59230, 71076, 82922, 88845, 94768, 118460, 124383, 142152, 165844, 177690, 189536, 207305, 236920, 248766, 284304, 331688, 355380, 414610, 473840, 497532, 568608, 621915, 663376, 710760, 829220, 947680, 995064, 1243830, 1326752, 1421520, 1658440, 1990128, 2487660, 2843040, 3316880, 3980256, 4975320, 6633760, 9950640, 19901280]

約数ペア:

[(1, 19901280), (2, 9950640), (3, 6633760), (4, 4975320), (5, 3980256), (6, 3316880), (7, 2843040), (8, 2487660), (10, 1990128), (12, 1658440), (14, 1421520), (15, 1326752), (16, 1243830), (20, 995064), (21, 947680), (24, 829220), (28, 710760), (30, 663376), (32, 621915), (35, 568608), (40, 497532), (42, 473840), (48, 414610), (56, 355380), (60, 331688), (70, 284304), (80, 248766), (84, 236920), (96, 207305), (105, 189536), (112, 177690), (120, 165844), (140, 142152), (160, 124383), (168, 118460), (210, 94768), (224, 88845), (240, 82922), (280, 71076), (336, 59230), (420, 47384), (480, 41461), (560, 35538), (672, 29615), (840, 23692), (1120, 17769), (1680, 11846), (3360, 5923)]