81961425

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{4003}}^1$

素因数の和:4039

約数の個数: 72

約数和(自身を含む): 180724544

約数和(自身を除く): 98763119

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 25, 35, 39, 45, 63, 65, 75, 91, 105, 117, 175, 195, 225, 273, 315, 325, 455, 525, 585, 819, 975, 1365, 1575, 2275, 2925, 4003, 4095, 6825, 12009, 20015, 20475, 28021, 36027, 52039, 60045, 84063, 100075, 140105, 156117, 180135, 252189, 260195, 300225, 364273, 420315, 468351, 700525, 780585, 900675, 1092819, 1260945, 1300975, 1821365, 2101575, 2341755, 3278457, 3902925, 5464095, 6304725, 9106825, 11708775, 16392285, 27320475, 81961425]

約数ペア:

[(1, 81961425), (3, 27320475), (5, 16392285), (7, 11708775), (9, 9106825), (13, 6304725), (15, 5464095), (21, 3902925), (25, 3278457), (35, 2341755), (39, 2101575), (45, 1821365), (63, 1300975), (65, 1260945), (75, 1092819), (91, 900675), (105, 780585), (117, 700525), (175, 468351), (195, 420315), (225, 364273), (273, 300225), (315, 260195), (325, 252189), (455, 180135), (525, 156117), (585, 140105), (819, 100075), (975, 84063), (1365, 60045), (1575, 52039), (2275, 36027), (2925, 28021), (4003, 20475), (4095, 20015), (6825, 12009)]