20849931

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{487}}^1$

素因数の和:631

約数の個数: 24

約数和(自身を含む): 31060224

約数和(自身を除く): 10210293

約数列:

[1, 3, 9, 67, 71, 201, 213, 487, 603, 639, 1461, 4383, 4757, 14271, 32629, 34577, 42813, 97887, 103731, 293661, 311193, 2316659, 6949977, 20849931]

約数ペア:

[(1, 20849931), (3, 6949977), (9, 2316659), (67, 311193), (71, 293661), (201, 103731), (213, 97887), (487, 42813), (603, 34577), (639, 32629), (1461, 14271), (4383, 4757)]