280972237

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1$

素因数の和:485

約数の個数: 32

約数和(自身を含む): 353427200

約数和(自身を除く): 72454963

約数列:

[1, 7, 13, 91, 97, 139, 229, 679, 973, 1261, 1603, 1807, 2977, 8827, 12649, 13483, 20839, 22213, 31831, 94381, 155491, 175279, 222817, 288769, 413803, 1226953, 2021383, 2896621, 3087607, 21613249, 40138891, 280972237]

約数ペア:

[(1, 280972237), (7, 40138891), (13, 21613249), (91, 3087607), (97, 2896621), (139, 2021383), (229, 1226953), (679, 413803), (973, 288769), (1261, 222817), (1603, 175279), (1807, 155491), (2977, 94381), (8827, 31831), (12649, 22213), (13483, 20839)]