7776820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{257}}^1$

素因数の和:372

約数の個数: 48

約数和(自身を含む): 17554320

約数和(自身を除く): 9777500

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 89, 170, 178, 257, 340, 356, 445, 514, 890, 1028, 1285, 1513, 1780, 2570, 3026, 4369, 5140, 6052, 7565, 8738, 15130, 17476, 21845, 22873, 30260, 43690, 45746, 87380, 91492, 114365, 228730, 388841, 457460, 777682, 1555364, 1944205, 3888410, 7776820]

約数ペア:

[(1, 7776820), (2, 3888410), (4, 1944205), (5, 1555364), (10, 777682), (17, 457460), (20, 388841), (34, 228730), (68, 114365), (85, 91492), (89, 87380), (170, 45746), (178, 43690), (257, 30260), (340, 22873), (356, 21845), (445, 17476), (514, 15130), (890, 8738), (1028, 7565), (1285, 6052), (1513, 5140), (1780, 4369), (2570, 3026)]