12738020

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{197}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 27841968

約数和(自身を除く): 15103948

約数列:

[1, 2, 4, 5, 10, 20, 53, 61, 106, 122, 197, 212, 244, 265, 305, 394, 530, 610, 788, 985, 1060, 1220, 1970, 3233, 3940, 6466, 10441, 12017, 12932, 16165, 20882, 24034, 32330, 41764, 48068, 52205, 60085, 64660, 104410, 120170, 208820, 240340, 636901, 1273802, 2547604, 3184505, 6369010, 12738020]

約数ペア:

[(1, 12738020), (2, 6369010), (4, 3184505), (5, 2547604), (10, 1273802), (20, 636901), (53, 240340), (61, 208820), (106, 120170), (122, 104410), (197, 64660), (212, 60085), (244, 52205), (265, 48068), (305, 41764), (394, 32330), (530, 24034), (610, 20882), (788, 16165), (985, 12932), (1060, 12017), (1220, 10441), (1970, 6466), (3233, 3940)]