7800520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2143}}^1$

素因数の和:2174

約数の個数: 64

約数和(自身を含む): 21611520

約数和(自身を除く): 13811000

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, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 2143, 3640, 4286, 8572, 10715, 15001, 17144, 21430, 27859, 30002, 42860, 55718, 60004, 75005, 85720, 111436, 120008, 139295, 150010, 195013, 222872, 278590, 300020, 390026, 557180, 600040, 780052, 975065, 1114360, 1560104, 1950130, 3900260, 7800520]

約数ペア:

[(1, 7800520), (2, 3900260), (4, 1950130), (5, 1560104), (7, 1114360), (8, 975065), (10, 780052), (13, 600040), (14, 557180), (20, 390026), (26, 300020), (28, 278590), (35, 222872), (40, 195013), (52, 150010), (56, 139295), (65, 120008), (70, 111436), (91, 85720), (104, 75005), (130, 60004), (140, 55718), (182, 42860), (260, 30002), (280, 27859), (364, 21430), (455, 17144), (520, 15001), (728, 10715), (910, 8572), (1820, 4286), (2143, 3640)]