81690245

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1$

素因数の和:246

約数の個数: 64

約数和(自身を含む): 128701440

約数和(自身を除く): 47011195

約数列:

[1, 5, 7, 13, 29, 35, 41, 65, 91, 145, 151, 203, 205, 287, 377, 455, 533, 755, 1015, 1057, 1189, 1435, 1885, 1963, 2639, 2665, 3731, 4379, 5285, 5945, 6191, 8323, 9815, 13195, 13741, 15457, 18655, 21895, 30653, 30955, 41615, 43337, 56927, 68705, 77285, 80483, 108199, 153265, 179539, 216685, 284635, 398489, 402415, 540995, 563381, 897695, 1256773, 1992445, 2334007, 2816905, 6283865, 11670035, 16338049, 81690245]

約数ペア:

[(1, 81690245), (5, 16338049), (7, 11670035), (13, 6283865), (29, 2816905), (35, 2334007), (41, 1992445), (65, 1256773), (91, 897695), (145, 563381), (151, 540995), (203, 402415), (205, 398489), (287, 284635), (377, 216685), (455, 179539), (533, 153265), (755, 108199), (1015, 80483), (1057, 77285), (1189, 68705), (1435, 56927), (1885, 43337), (1963, 41615), (2639, 30955), (2665, 30653), (3731, 21895), (4379, 18655), (5285, 15457), (5945, 13741), (6191, 13195), (8323, 9815)]