21437390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{1601}}^1$

素因数の和:1724

約数の個数: 32

約数和(自身を含む): 41985216

約数和(自身を除く): 20547826

約数列:

[1, 2, 5, 10, 13, 26, 65, 103, 130, 206, 515, 1030, 1339, 1601, 2678, 3202, 6695, 8005, 13390, 16010, 20813, 41626, 104065, 164903, 208130, 329806, 824515, 1649030, 2143739, 4287478, 10718695, 21437390]

約数ペア:

[(1, 21437390), (2, 10718695), (5, 4287478), (10, 2143739), (13, 1649030), (26, 824515), (65, 329806), (103, 208130), (130, 164903), (206, 104065), (515, 41626), (1030, 20813), (1339, 16010), (1601, 13390), (2678, 8005), (3202, 6695)]