81390015

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1511}}^1$

素因数の和:1554

約数の個数: 80

約数和(自身を含む): 175633920

約数和(自身を除く): 94243905

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 27, 35, 45, 57, 63, 81, 95, 105, 133, 135, 171, 189, 285, 315, 399, 405, 513, 567, 665, 855, 945, 1197, 1511, 1539, 1995, 2565, 2835, 3591, 4533, 5985, 7555, 7695, 10577, 10773, 13599, 17955, 22665, 28709, 31731, 40797, 52885, 53865, 67995, 86127, 95193, 122391, 143545, 158655, 200963, 203985, 258381, 285579, 430635, 475965, 602889, 611955, 775143, 856737, 1004815, 1291905, 1427895, 1808667, 2325429, 3014445, 3875715, 4283685, 5426001, 9043335, 11627145, 16278003, 27130005, 81390015]

約数ペア:

[(1, 81390015), (3, 27130005), (5, 16278003), (7, 11627145), (9, 9043335), (15, 5426001), (19, 4283685), (21, 3875715), (27, 3014445), (35, 2325429), (45, 1808667), (57, 1427895), (63, 1291905), (81, 1004815), (95, 856737), (105, 775143), (133, 611955), (135, 602889), (171, 475965), (189, 430635), (285, 285579), (315, 258381), (399, 203985), (405, 200963), (513, 158655), (567, 143545), (665, 122391), (855, 95193), (945, 86127), (1197, 67995), (1511, 53865), (1539, 52885), (1995, 40797), (2565, 31731), (2835, 28709), (3591, 22665), (4533, 17955), (5985, 13599), (7555, 10773), (7695, 10577)]