213749487

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{178571}}^1$

素因数の和:178603

約数の個数: 24

約数和(自身を含む): 371429760

約数和(自身を除く): 157680273

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 178571, 535713, 1249997, 1607139, 3392849, 3749991, 10178547, 11249973, 23749943, 30535641, 71249829, 213749487]

約数ペア:

[(1, 213749487), (3, 71249829), (7, 30535641), (9, 23749943), (19, 11249973), (21, 10178547), (57, 3749991), (63, 3392849), (133, 1607139), (171, 1249997), (399, 535713), (1197, 178571)]