20826615

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:168

約数の個数: 64

約数和(自身を含む): 38071296

約数和(自身を除く): 17244681

約数列:

[1, 3, 5, 15, 17, 23, 51, 53, 67, 69, 85, 115, 159, 201, 255, 265, 335, 345, 391, 795, 901, 1005, 1139, 1173, 1219, 1541, 1955, 2703, 3417, 3551, 3657, 4505, 4623, 5695, 5865, 6095, 7705, 10653, 13515, 17085, 17755, 18285, 20723, 23115, 26197, 53265, 60367, 62169, 78591, 81673, 103615, 130985, 181101, 245019, 301835, 310845, 392955, 408365, 905505, 1225095, 1388441, 4165323, 6942205, 20826615]

約数ペア:

[(1, 20826615), (3, 6942205), (5, 4165323), (15, 1388441), (17, 1225095), (23, 905505), (51, 408365), (53, 392955), (67, 310845), (69, 301835), (85, 245019), (115, 181101), (159, 130985), (201, 103615), (255, 81673), (265, 78591), (335, 62169), (345, 60367), (391, 53265), (795, 26197), (901, 23115), (1005, 20723), (1139, 18285), (1173, 17755), (1219, 17085), (1541, 13515), (1955, 10653), (2703, 7705), (3417, 6095), (3551, 5865), (3657, 5695), (4505, 4623)]