81533580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{653}}^1\times {\mathrm{2081}}^1$

素因数の和:2746

約数の個数: 48

約数和(自身を含む): 228753504

約数和(自身を除く): 147219924

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 653, 1306, 1959, 2081, 2612, 3265, 3918, 4162, 6243, 6530, 7836, 8324, 9795, 10405, 12486, 13060, 19590, 20810, 24972, 31215, 39180, 41620, 62430, 124860, 1358893, 2717786, 4076679, 5435572, 6794465, 8153358, 13588930, 16306716, 20383395, 27177860, 40766790, 81533580]

約数ペア:

[(1, 81533580), (2, 40766790), (3, 27177860), (4, 20383395), (5, 16306716), (6, 13588930), (10, 8153358), (12, 6794465), (15, 5435572), (20, 4076679), (30, 2717786), (60, 1358893), (653, 124860), (1306, 62430), (1959, 41620), (2081, 39180), (2612, 31215), (3265, 24972), (3918, 20810), (4162, 19590), (6243, 13060), (6530, 12486), (7836, 10405), (8324, 9795)]