21079690

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{1283}}^1$

素因数の和:1374

約数の個数: 32

約数和(自身を含む): 39937536

約数和(自身を除く): 18857846

約数列:

[1, 2, 5, 10, 31, 53, 62, 106, 155, 265, 310, 530, 1283, 1643, 2566, 3286, 6415, 8215, 12830, 16430, 39773, 67999, 79546, 135998, 198865, 339995, 397730, 679990, 2107969, 4215938, 10539845, 21079690]

約数ペア:

[(1, 21079690), (2, 10539845), (5, 4215938), (10, 2107969), (31, 679990), (53, 397730), (62, 339995), (106, 198865), (155, 135998), (265, 79546), (310, 67999), (530, 39773), (1283, 16430), (1643, 12830), (2566, 8215), (3286, 6415)]