81609255

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{73}}^1$

素因数の和:127

約数の個数: 144

約数和(自身を含む): 185254560

約数和(自身を除く): 103645305

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 27, 35, 39, 45, 49, 63, 65, 73, 91, 105, 117, 135, 147, 169, 189, 195, 219, 245, 273, 315, 351, 365, 441, 455, 507, 511, 585, 637, 657, 735, 819, 845, 945, 949, 1095, 1183, 1323, 1365, 1521, 1533, 1755, 1911, 1971, 2205, 2457, 2535, 2555, 2847, 3185, 3285, 3549, 3577, 4095, 4563, 4599, 4745, 5733, 5915, 6615, 6643, 7605, 7665, 8281, 8541, 9555, 9855, 10647, 10731, 12285, 12337, 13797, 14235, 17199, 17745, 17885, 19929, 22815, 22995, 24843, 25623, 28665, 31941, 32193, 33215, 37011, 41405, 42705, 46501, 53235, 53655, 59787, 61685, 68985, 74529, 85995, 86359, 96579, 99645, 111033, 124215, 128115, 139503, 159705, 160965, 179361, 185055, 223587, 232505, 259077, 298935, 333099, 372645, 418509, 431795, 482895, 555165, 604513, 697515, 777231, 896805, 1117935, 1255527, 1295385, 1665495, 1813539, 2092545, 2331693, 3022565, 3886155, 5440617, 6277635, 9067695, 11658465, 16321851, 27203085, 81609255]

約数ペア:

[(1, 81609255), (3, 27203085), (5, 16321851), (7, 11658465), (9, 9067695), (13, 6277635), (15, 5440617), (21, 3886155), (27, 3022565), (35, 2331693), (39, 2092545), (45, 1813539), (49, 1665495), (63, 1295385), (65, 1255527), (73, 1117935), (91, 896805), (105, 777231), (117, 697515), (135, 604513), (147, 555165), (169, 482895), (189, 431795), (195, 418509), (219, 372645), (245, 333099), (273, 298935), (315, 259077), (351, 232505), (365, 223587), (441, 185055), (455, 179361), (507, 160965), (511, 159705), (585, 139503), (637, 128115), (657, 124215), (735, 111033), (819, 99645), (845, 96579), (945, 86359), (949, 85995), (1095, 74529), (1183, 68985), (1323, 61685), (1365, 59787), (1521, 53655), (1533, 53235), (1755, 46501), (1911, 42705), (1971, 41405), (2205, 37011), (2457, 33215), (2535, 32193), (2555, 31941), (2847, 28665), (3185, 25623), (3285, 24843), (3549, 22995), (3577, 22815), (4095, 19929), (4563, 17885), (4599, 17745), (4745, 17199), (5733, 14235), (5915, 13797), (6615, 12337), (6643, 12285), (7605, 10731), (7665, 10647), (8281, 9855), (8541, 9555)]