19501240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1$

素因数の和:133

約数の個数: 128

約数和(自身を含む): 52254720

約数和(自身を除く): 32753480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 40, 41, 44, 46, 47, 55, 82, 88, 92, 94, 110, 115, 164, 184, 188, 205, 220, 230, 235, 253, 328, 376, 410, 440, 451, 460, 470, 506, 517, 820, 902, 920, 940, 943, 1012, 1034, 1081, 1265, 1640, 1804, 1880, 1886, 1927, 2024, 2068, 2162, 2255, 2530, 2585, 3608, 3772, 3854, 4136, 4324, 4510, 4715, 5060, 5170, 5405, 7544, 7708, 8648, 9020, 9430, 9635, 10120, 10340, 10373, 10810, 11891, 15416, 18040, 18860, 19270, 20680, 20746, 21197, 21620, 23782, 37720, 38540, 41492, 42394, 43240, 44321, 47564, 51865, 59455, 77080, 82984, 84788, 88642, 95128, 103730, 105985, 118910, 169576, 177284, 207460, 211970, 221605, 237820, 354568, 414920, 423940, 443210, 475640, 487531, 847880, 886420, 975062, 1772840, 1950124, 2437655, 3900248, 4875310, 9750620, 19501240]

約数ペア:

[(1, 19501240), (2, 9750620), (4, 4875310), (5, 3900248), (8, 2437655), (10, 1950124), (11, 1772840), (20, 975062), (22, 886420), (23, 847880), (40, 487531), (41, 475640), (44, 443210), (46, 423940), (47, 414920), (55, 354568), (82, 237820), (88, 221605), (92, 211970), (94, 207460), (110, 177284), (115, 169576), (164, 118910), (184, 105985), (188, 103730), (205, 95128), (220, 88642), (230, 84788), (235, 82984), (253, 77080), (328, 59455), (376, 51865), (410, 47564), (440, 44321), (451, 43240), (460, 42394), (470, 41492), (506, 38540), (517, 37720), (820, 23782), (902, 21620), (920, 21197), (940, 20746), (943, 20680), (1012, 19270), (1034, 18860), (1081, 18040), (1265, 15416), (1640, 11891), (1804, 10810), (1880, 10373), (1886, 10340), (1927, 10120), (2024, 9635), (2068, 9430), (2162, 9020), (2255, 8648), (2530, 7708), (2585, 7544), (3608, 5405), (3772, 5170), (3854, 5060), (4136, 4715), (4324, 4510)]