20197970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{619}}^1$

素因数の和:890

約数の個数: 32

約数和(自身を含む): 39372480

約数和(自身を除く): 19174510

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 251, 502, 619, 1238, 1255, 2510, 3095, 3263, 6190, 6526, 8047, 16094, 16315, 32630, 40235, 80470, 155369, 310738, 776845, 1553690, 2019797, 4039594, 10098985, 20197970]

約数ペア:

[(1, 20197970), (2, 10098985), (5, 4039594), (10, 2019797), (13, 1553690), (26, 776845), (65, 310738), (130, 155369), (251, 80470), (502, 40235), (619, 32630), (1238, 16315), (1255, 16094), (2510, 8047), (3095, 6526), (3263, 6190)]