19693940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:177

約数の個数: 96

約数和(自身を含む): 50125824

約数和(自身を除く): 30431884

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 47, 70, 73, 82, 94, 140, 146, 164, 188, 205, 235, 287, 292, 329, 365, 410, 470, 511, 574, 658, 730, 820, 940, 1022, 1148, 1316, 1435, 1460, 1645, 1927, 2044, 2555, 2870, 2993, 3290, 3431, 3854, 5110, 5740, 5986, 6580, 6862, 7708, 9635, 10220, 11972, 13489, 13724, 14965, 17155, 19270, 20951, 24017, 26978, 29930, 34310, 38540, 41902, 48034, 53956, 59860, 67445, 68620, 83804, 96068, 104755, 120085, 134890, 140671, 209510, 240170, 269780, 281342, 419020, 480340, 562684, 703355, 984697, 1406710, 1969394, 2813420, 3938788, 4923485, 9846970, 19693940]

約数ペア:

[(1, 19693940), (2, 9846970), (4, 4923485), (5, 3938788), (7, 2813420), (10, 1969394), (14, 1406710), (20, 984697), (28, 703355), (35, 562684), (41, 480340), (47, 419020), (70, 281342), (73, 269780), (82, 240170), (94, 209510), (140, 140671), (146, 134890), (164, 120085), (188, 104755), (205, 96068), (235, 83804), (287, 68620), (292, 67445), (329, 59860), (365, 53956), (410, 48034), (470, 41902), (511, 38540), (574, 34310), (658, 29930), (730, 26978), (820, 24017), (940, 20951), (1022, 19270), (1148, 17155), (1316, 14965), (1435, 13724), (1460, 13489), (1645, 11972), (1927, 10220), (2044, 9635), (2555, 7708), (2870, 6862), (2993, 6580), (3290, 5986), (3431, 5740), (3854, 5110)]