1261780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{211}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 2991744

約数和(自身を除く): 1729964

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 52, 65, 92, 115, 130, 211, 230, 260, 299, 422, 460, 598, 844, 1055, 1196, 1495, 2110, 2743, 2990, 4220, 4853, 5486, 5980, 9706, 10972, 13715, 19412, 24265, 27430, 48530, 54860, 63089, 97060, 126178, 252356, 315445, 630890, 1261780]

約数ペア:

[(1, 1261780), (2, 630890), (4, 315445), (5, 252356), (10, 126178), (13, 97060), (20, 63089), (23, 54860), (26, 48530), (46, 27430), (52, 24265), (65, 19412), (92, 13715), (115, 10972), (130, 9706), (211, 5980), (230, 5486), (260, 4853), (299, 4220), (422, 2990), (460, 2743), (598, 2110), (844, 1495), (1055, 1196)]