18967884

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{199}}^1$

素因数の和:279

約数の個数: 72

約数和(自身を含む): 49190400

約数和(自身を除く): 30222516

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 47, 52, 78, 94, 141, 156, 169, 188, 199, 282, 338, 398, 507, 564, 597, 611, 676, 796, 1014, 1194, 1222, 1833, 2028, 2388, 2444, 2587, 3666, 5174, 7332, 7761, 7943, 9353, 10348, 15522, 15886, 18706, 23829, 28059, 31044, 31772, 33631, 37412, 47658, 56118, 67262, 95316, 100893, 112236, 121589, 134524, 201786, 243178, 364767, 403572, 486356, 729534, 1459068, 1580657, 3161314, 4741971, 6322628, 9483942, 18967884]

約数ペア:

[(1, 18967884), (2, 9483942), (3, 6322628), (4, 4741971), (6, 3161314), (12, 1580657), (13, 1459068), (26, 729534), (39, 486356), (47, 403572), (52, 364767), (78, 243178), (94, 201786), (141, 134524), (156, 121589), (169, 112236), (188, 100893), (199, 95316), (282, 67262), (338, 56118), (398, 47658), (507, 37412), (564, 33631), (597, 31772), (611, 31044), (676, 28059), (796, 23829), (1014, 18706), (1194, 15886), (1222, 15522), (1833, 10348), (2028, 9353), (2388, 7943), (2444, 7761), (2587, 7332), (3666, 5174)]