19838640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{631}}^1$

素因数の和:778

約数の個数: 80

約数和(自身を含む): 62067456

約数和(自身を除く): 42228816

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 131, 240, 262, 393, 524, 631, 655, 786, 1048, 1262, 1310, 1572, 1893, 1965, 2096, 2524, 2620, 3144, 3155, 3786, 3930, 5048, 5240, 6288, 6310, 7572, 7860, 9465, 10096, 10480, 12620, 15144, 15720, 18930, 25240, 30288, 31440, 37860, 50480, 75720, 82661, 151440, 165322, 247983, 330644, 413305, 495966, 661288, 826610, 991932, 1239915, 1322576, 1653220, 1983864, 2479830, 3306440, 3967728, 4959660, 6612880, 9919320, 19838640]

約数ペア:

[(1, 19838640), (2, 9919320), (3, 6612880), (4, 4959660), (5, 3967728), (6, 3306440), (8, 2479830), (10, 1983864), (12, 1653220), (15, 1322576), (16, 1239915), (20, 991932), (24, 826610), (30, 661288), (40, 495966), (48, 413305), (60, 330644), (80, 247983), (120, 165322), (131, 151440), (240, 82661), (262, 75720), (393, 50480), (524, 37860), (631, 31440), (655, 30288), (786, 25240), (1048, 18930), (1262, 15720), (1310, 15144), (1572, 12620), (1893, 10480), (1965, 10096), (2096, 9465), (2524, 7860), (2620, 7572), (3144, 6310), (3155, 6288), (3786, 5240), (3930, 5048)]