19921720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{421}}^1$

素因数の和:465

約数の個数: 96

約数和(自身を含む): 55602720

約数和(自身を除く): 35681000

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 169, 182, 260, 280, 338, 364, 421, 455, 520, 676, 728, 842, 845, 910, 1183, 1352, 1684, 1690, 1820, 2105, 2366, 2947, 3368, 3380, 3640, 4210, 4732, 5473, 5894, 5915, 6760, 8420, 9464, 10946, 11788, 11830, 14735, 16840, 21892, 23576, 23660, 27365, 29470, 38311, 43784, 47320, 54730, 58940, 71149, 76622, 109460, 117880, 142298, 153244, 191555, 218920, 284596, 306488, 355745, 383110, 498043, 569192, 711490, 766220, 996086, 1422980, 1532440, 1992172, 2490215, 2845960, 3984344, 4980430, 9960860, 19921720]

約数ペア:

[(1, 19921720), (2, 9960860), (4, 4980430), (5, 3984344), (7, 2845960), (8, 2490215), (10, 1992172), (13, 1532440), (14, 1422980), (20, 996086), (26, 766220), (28, 711490), (35, 569192), (40, 498043), (52, 383110), (56, 355745), (65, 306488), (70, 284596), (91, 218920), (104, 191555), (130, 153244), (140, 142298), (169, 117880), (182, 109460), (260, 76622), (280, 71149), (338, 58940), (364, 54730), (421, 47320), (455, 43784), (520, 38311), (676, 29470), (728, 27365), (842, 23660), (845, 23576), (910, 21892), (1183, 16840), (1352, 14735), (1684, 11830), (1690, 11788), (1820, 10946), (2105, 9464), (2366, 8420), (2947, 6760), (3368, 5915), (3380, 5894), (3640, 5473), (4210, 4732)]