21012537

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4051}}^1$

素因数の和:4093

約数の個数: 32

約数和(自身を含む): 36305920

約数和(自身を除く): 15293383

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 91, 133, 247, 273, 399, 741, 1729, 4051, 5187, 12153, 28357, 52663, 76969, 85071, 157989, 230907, 368641, 538783, 1000597, 1105923, 1616349, 3001791, 7004179, 21012537]

約数ペア:

[(1, 21012537), (3, 7004179), (7, 3001791), (13, 1616349), (19, 1105923), (21, 1000597), (39, 538783), (57, 368641), (91, 230907), (133, 157989), (247, 85071), (273, 76969), (399, 52663), (741, 28357), (1729, 12153), (4051, 5187)]