20444320

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9829}}^1$

素因数の和:9857

約数の個数: 48

約数和(自身を含む): 52020360

約数和(自身を除く): 31576040

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9829, 19658, 39316, 49145, 78632, 98290, 127777, 157264, 196580, 255554, 314528, 393160, 511108, 638885, 786320, 1022216, 1277770, 1572640, 2044432, 2555540, 4088864, 5111080, 10222160, 20444320]

約数ペア:

[(1, 20444320), (2, 10222160), (4, 5111080), (5, 4088864), (8, 2555540), (10, 2044432), (13, 1572640), (16, 1277770), (20, 1022216), (26, 786320), (32, 638885), (40, 511108), (52, 393160), (65, 314528), (80, 255554), (104, 196580), (130, 157264), (160, 127777), (208, 98290), (260, 78632), (416, 49145), (520, 39316), (1040, 19658), (2080, 9829)]