12860020

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1\times {\mathrm{127}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 27998208

約数和(自身を除く): 15138188

約数列:

[1, 2, 4, 5, 10, 20, 61, 83, 122, 127, 166, 244, 254, 305, 332, 415, 508, 610, 635, 830, 1220, 1270, 1660, 2540, 5063, 7747, 10126, 10541, 15494, 20252, 21082, 25315, 30988, 38735, 42164, 50630, 52705, 77470, 101260, 105410, 154940, 210820, 643001, 1286002, 2572004, 3215005, 6430010, 12860020]

約数ペア:

[(1, 12860020), (2, 6430010), (4, 3215005), (5, 2572004), (10, 1286002), (20, 643001), (61, 210820), (83, 154940), (122, 105410), (127, 101260), (166, 77470), (244, 52705), (254, 50630), (305, 42164), (332, 38735), (415, 30988), (508, 25315), (610, 21082), (635, 20252), (830, 15494), (1220, 10541), (1270, 10126), (1660, 7747), (2540, 5063)]