21397336

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{163}}^1\times {\mathrm{269}}^1$

素因数の和:499

約数の個数: 32

約数和(自身を含む): 41180400

約数和(自身を除く): 19783064

約数列:

[1, 2, 4, 8, 61, 122, 163, 244, 269, 326, 488, 538, 652, 1076, 1304, 2152, 9943, 16409, 19886, 32818, 39772, 43847, 65636, 79544, 87694, 131272, 175388, 350776, 2674667, 5349334, 10698668, 21397336]

約数ペア:

[(1, 21397336), (2, 10698668), (4, 5349334), (8, 2674667), (61, 350776), (122, 175388), (163, 131272), (244, 87694), (269, 79544), (326, 65636), (488, 43847), (538, 39772), (652, 32818), (1076, 19886), (1304, 16409), (2152, 9943)]