15662965820

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{419}}^1\times {\mathrm{21001}}^1$

素因数の和:21518

約数の個数: 48

約数和(自身を含む): 33342775200

約数和(自身を除く): 17679809380

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 419, 445, 838, 890, 1676, 1780, 2095, 4190, 8380, 21001, 37291, 42002, 74582, 84004, 105005, 149164, 186455, 210010, 372910, 420020, 745820, 1869089, 3738178, 7476356, 8799419, 9345445, 17598838, 18690890, 35197676, 37381780, 43997095, 87994190, 175988380, 783148291, 1566296582, 3132593164, 3915741455, 7831482910, 15662965820]

約数ペア:

[(1, 15662965820), (2, 7831482910), (4, 3915741455), (5, 3132593164), (10, 1566296582), (20, 783148291), (89, 175988380), (178, 87994190), (356, 43997095), (419, 37381780), (445, 35197676), (838, 18690890), (890, 17598838), (1676, 9345445), (1780, 8799419), (2095, 7476356), (4190, 3738178), (8380, 1869089), (21001, 745820), (37291, 420020), (42002, 372910), (74582, 210010), (84004, 186455), (105005, 149164)]