31857399

素因数分解:

$3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:149

約数の個数: 72

約数和(自身を含む): 57620160

約数和(自身を除く): 25762761

約数列:

[1, 3, 7, 9, 21, 29, 47, 49, 53, 63, 87, 141, 147, 159, 203, 261, 329, 371, 423, 441, 477, 609, 987, 1113, 1363, 1421, 1537, 1827, 2303, 2491, 2597, 2961, 3339, 4089, 4263, 4611, 6909, 7473, 7791, 9541, 10759, 12267, 12789, 13833, 17437, 20727, 22419, 23373, 28623, 32277, 52311, 66787, 72239, 75313, 85869, 96831, 122059, 156933, 200361, 216717, 225939, 366177, 505673, 601083, 650151, 677817, 1098531, 1517019, 3539711, 4551057, 10619133, 31857399]

約数ペア:

[(1, 31857399), (3, 10619133), (7, 4551057), (9, 3539711), (21, 1517019), (29, 1098531), (47, 677817), (49, 650151), (53, 601083), (63, 505673), (87, 366177), (141, 225939), (147, 216717), (159, 200361), (203, 156933), (261, 122059), (329, 96831), (371, 85869), (423, 75313), (441, 72239), (477, 66787), (609, 52311), (987, 32277), (1113, 28623), (1363, 23373), (1421, 22419), (1537, 20727), (1827, 17437), (2303, 13833), (2491, 12789), (2597, 12267), (2961, 10759), (3339, 9541), (4089, 7791), (4263, 7473), (4611, 6909)]