81720972

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{1993}}^1$

素因数の和:2087

約数の個数: 72

約数和(自身を含む): 222099696

約数和(自身を除く): 140378724

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 67, 68, 102, 134, 153, 201, 204, 268, 306, 402, 603, 612, 804, 1139, 1206, 1993, 2278, 2412, 3417, 3986, 4556, 5979, 6834, 7972, 10251, 11958, 13668, 17937, 20502, 23916, 33881, 35874, 41004, 67762, 71748, 101643, 133531, 135524, 203286, 267062, 304929, 400593, 406572, 534124, 609858, 801186, 1201779, 1219716, 1602372, 2270027, 2403558, 4540054, 4807116, 6810081, 9080108, 13620162, 20430243, 27240324, 40860486, 81720972]

約数ペア:

[(1, 81720972), (2, 40860486), (3, 27240324), (4, 20430243), (6, 13620162), (9, 9080108), (12, 6810081), (17, 4807116), (18, 4540054), (34, 2403558), (36, 2270027), (51, 1602372), (67, 1219716), (68, 1201779), (102, 801186), (134, 609858), (153, 534124), (201, 406572), (204, 400593), (268, 304929), (306, 267062), (402, 203286), (603, 135524), (612, 133531), (804, 101643), (1139, 71748), (1206, 67762), (1993, 41004), (2278, 35874), (2412, 33881), (3417, 23916), (3986, 20502), (4556, 17937), (5979, 13668), (6834, 11958), (7972, 10251)]