129241720

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{15313}}^1$

素因数の和:15535

約数の個数: 32

約数和(自身を含む): 292191120

約数和(自身を除く): 162949400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 4220, 8440, 15313, 30626, 61252, 76565, 122504, 153130, 306260, 612520, 3231043, 6462086, 12924172, 16155215, 25848344, 32310430, 64620860, 129241720]

約数ペア:

[(1, 129241720), (2, 64620860), (4, 32310430), (5, 25848344), (8, 16155215), (10, 12924172), (20, 6462086), (40, 3231043), (211, 612520), (422, 306260), (844, 153130), (1055, 122504), (1688, 76565), (2110, 61252), (4220, 30626), (8440, 15313)]