1373840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1321}}^1$

素因数の和:1347

約数の個数: 40

約数和(自身を含む): 3442488

約数和(自身を除く): 2068648

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 1321, 2642, 5284, 6605, 10568, 13210, 17173, 21136, 26420, 34346, 52840, 68692, 85865, 105680, 137384, 171730, 274768, 343460, 686920, 1373840]

約数ペア:

[(1, 1373840), (2, 686920), (4, 343460), (5, 274768), (8, 171730), (10, 137384), (13, 105680), (16, 85865), (20, 68692), (26, 52840), (40, 34346), (52, 26420), (65, 21136), (80, 17173), (104, 13210), (130, 10568), (208, 6605), (260, 5284), (520, 2642), (1040, 1321)]