19969040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{211}}^1$

素因数の和:257

約数の個数: 120

約数和(自身を含む): 57728448

約数和(自身を除く): 37759408

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 169, 182, 208, 211, 260, 280, 338, 364, 422, 455, 520, 560, 676, 728, 844, 845, 910, 1040, 1055, 1183, 1352, 1456, 1477, 1688, 1690, 1820, 2110, 2366, 2704, 2743, 2954, 3376, 3380, 3640, 4220, 4732, 5486, 5908, 5915, 6760, 7280, 7385, 8440, 9464, 10972, 11816, 11830, 13520, 13715, 14770, 16880, 18928, 19201, 21944, 23632, 23660, 27430, 29540, 35659, 38402, 43888, 47320, 54860, 59080, 71318, 76804, 94640, 96005, 109720, 118160, 142636, 153608, 178295, 192010, 219440, 249613, 285272, 307216, 356590, 384020, 499226, 570544, 713180, 768040, 998452, 1248065, 1426360, 1536080, 1996904, 2496130, 2852720, 3993808, 4992260, 9984520, 19969040]

約数ペア:

[(1, 19969040), (2, 9984520), (4, 4992260), (5, 3993808), (7, 2852720), (8, 2496130), (10, 1996904), (13, 1536080), (14, 1426360), (16, 1248065), (20, 998452), (26, 768040), (28, 713180), (35, 570544), (40, 499226), (52, 384020), (56, 356590), (65, 307216), (70, 285272), (80, 249613), (91, 219440), (104, 192010), (112, 178295), (130, 153608), (140, 142636), (169, 118160), (182, 109720), (208, 96005), (211, 94640), (260, 76804), (280, 71318), (338, 59080), (364, 54860), (422, 47320), (455, 43888), (520, 38402), (560, 35659), (676, 29540), (728, 27430), (844, 23660), (845, 23632), (910, 21944), (1040, 19201), (1055, 18928), (1183, 16880), (1352, 14770), (1456, 13715), (1477, 13520), (1688, 11830), (1690, 11816), (1820, 10972), (2110, 9464), (2366, 8440), (2704, 7385), (2743, 7280), (2954, 6760), (3376, 5915), (3380, 5908), (3640, 5486), (4220, 4732)]