31006521

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{131}}^1$

素因数の和:191

約数の個数: 72

約数和(自身を含む): 59002944

約数和(自身を除く): 27996423

約数列:

[1, 3, 7, 9, 13, 17, 21, 39, 51, 63, 91, 117, 119, 131, 153, 221, 273, 289, 357, 393, 663, 819, 867, 917, 1071, 1179, 1547, 1703, 1989, 2023, 2227, 2601, 2751, 3757, 4641, 5109, 6069, 6681, 8253, 11271, 11921, 13923, 15327, 15589, 18207, 20043, 26299, 28951, 33813, 35763, 37859, 46767, 78897, 86853, 107289, 113577, 140301, 202657, 236691, 260559, 265013, 340731, 492167, 607971, 795039, 1476501, 1823913, 2385117, 3445169, 4429503, 10335507, 31006521]

約数ペア:

[(1, 31006521), (3, 10335507), (7, 4429503), (9, 3445169), (13, 2385117), (17, 1823913), (21, 1476501), (39, 795039), (51, 607971), (63, 492167), (91, 340731), (117, 265013), (119, 260559), (131, 236691), (153, 202657), (221, 140301), (273, 113577), (289, 107289), (357, 86853), (393, 78897), (663, 46767), (819, 37859), (867, 35763), (917, 33813), (1071, 28951), (1179, 26299), (1547, 20043), (1703, 18207), (1989, 15589), (2023, 15327), (2227, 13923), (2601, 11921), (2751, 11271), (3757, 8253), (4641, 6681), (5109, 6069)]