21787137021

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1\times {\mathrm{4283}}^1$

素因数の和:4482

約数の個数: 64

約数和(自身を含む): 33578883072

約数和(自身を除く): 11791746051

約数列:

[1, 3, 13, 23, 39, 53, 69, 107, 159, 299, 321, 689, 897, 1219, 1391, 2067, 2461, 3657, 4173, 4283, 5671, 7383, 12849, 15847, 17013, 31993, 47541, 55679, 73723, 95979, 98509, 130433, 167037, 221169, 226999, 295527, 391299, 458281, 680997, 1280617, 1374843, 1695629, 2950987, 3841851, 5086887, 5220977, 5957653, 8852961, 10540463, 15662931, 17872959, 24288893, 31621389, 67872701, 72866679, 137026019, 203618103, 315755609, 411078057, 558644539, 947266827, 1675933617, 7262379007, 21787137021]

約数ペア:

[(1, 21787137021), (3, 7262379007), (13, 1675933617), (23, 947266827), (39, 558644539), (53, 411078057), (69, 315755609), (107, 203618103), (159, 137026019), (299, 72866679), (321, 67872701), (689, 31621389), (897, 24288893), (1219, 17872959), (1391, 15662931), (2067, 10540463), (2461, 8852961), (3657, 5957653), (4173, 5220977), (4283, 5086887), (5671, 3841851), (7383, 2950987), (12849, 1695629), (15847, 1374843), (17013, 1280617), (31993, 680997), (47541, 458281), (55679, 391299), (73723, 295527), (95979, 226999), (98509, 221169), (130433, 167037)]