1991231486

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{229}}^1\times {\mathrm{421}}^1\times {\mathrm{449}}^1$

素因数の和:1124

約数の個数: 32

約数和(自身を含む): 3144744000

約数和(自身を除く): 1153512514

約数列:

[1, 2, 23, 46, 229, 421, 449, 458, 842, 898, 5267, 9683, 10327, 10534, 19366, 20654, 96409, 102821, 189029, 192818, 205642, 378058, 2217407, 2364883, 4347667, 4434814, 4729766, 8695334, 43287641, 86575282, 995615743, 1991231486]

約数ペア:

[(1, 1991231486), (2, 995615743), (23, 86575282), (46, 43287641), (229, 8695334), (421, 4729766), (449, 4434814), (458, 4347667), (842, 2364883), (898, 2217407), (5267, 378058), (9683, 205642), (10327, 192818), (10534, 189029), (19366, 102821), (20654, 96409)]