30831320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{281}}^1$

素因数の和:516

約数の個数: 64

約数和(自身を含む): 75327840

約数和(自身を除く): 44496520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 211, 260, 281, 422, 520, 562, 844, 1055, 1124, 1405, 1688, 2110, 2248, 2743, 2810, 3653, 4220, 5486, 5620, 7306, 8440, 10972, 11240, 13715, 14612, 18265, 21944, 27430, 29224, 36530, 54860, 59291, 73060, 109720, 118582, 146120, 237164, 296455, 474328, 592910, 770783, 1185820, 1541566, 2371640, 3083132, 3853915, 6166264, 7707830, 15415660, 30831320]

約数ペア:

[(1, 30831320), (2, 15415660), (4, 7707830), (5, 6166264), (8, 3853915), (10, 3083132), (13, 2371640), (20, 1541566), (26, 1185820), (40, 770783), (52, 592910), (65, 474328), (104, 296455), (130, 237164), (211, 146120), (260, 118582), (281, 109720), (422, 73060), (520, 59291), (562, 54860), (844, 36530), (1055, 29224), (1124, 27430), (1405, 21944), (1688, 18265), (2110, 14612), (2248, 13715), (2743, 11240), (2810, 10972), (3653, 8440), (4220, 7306), (5486, 5620)]