163865975

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{223}}^1$

素因数の和:289

約数の個数: 96

約数和(自身を含む): 279982080

約数和(自身を除く): 116116105

約数列:

[1, 5, 7, 13, 17, 19, 25, 35, 65, 85, 91, 95, 119, 133, 175, 221, 223, 247, 323, 325, 425, 455, 475, 595, 665, 1105, 1115, 1235, 1547, 1561, 1615, 1729, 2261, 2275, 2899, 2975, 3325, 3791, 4199, 4237, 5525, 5575, 6175, 7735, 7805, 8075, 8645, 11305, 14495, 18955, 20293, 20995, 21185, 26537, 29393, 29659, 38675, 39025, 43225, 49283, 55081, 56525, 72029, 72475, 94775, 101465, 104975, 105925, 132685, 146965, 148295, 246415, 275405, 344981, 360145, 385567, 504203, 507325, 663425, 734825, 741475, 936377, 1232075, 1377025, 1724905, 1800725, 1927835, 2521015, 4681885, 6554639, 8624525, 9639175, 12605075, 23409425, 32773195, 163865975]

約数ペア:

[(1, 163865975), (5, 32773195), (7, 23409425), (13, 12605075), (17, 9639175), (19, 8624525), (25, 6554639), (35, 4681885), (65, 2521015), (85, 1927835), (91, 1800725), (95, 1724905), (119, 1377025), (133, 1232075), (175, 936377), (221, 741475), (223, 734825), (247, 663425), (323, 507325), (325, 504203), (425, 385567), (455, 360145), (475, 344981), (595, 275405), (665, 246415), (1105, 148295), (1115, 146965), (1235, 132685), (1547, 105925), (1561, 104975), (1615, 101465), (1729, 94775), (2261, 72475), (2275, 72029), (2899, 56525), (2975, 55081), (3325, 49283), (3791, 43225), (4199, 39025), (4237, 38675), (5525, 29659), (5575, 29393), (6175, 26537), (7735, 21185), (7805, 20995), (8075, 20293), (8645, 18955), (11305, 14495)]