81751395

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{293}}^1$

素因数の和:420

約数の個数: 64

約数和(自身を含む): 152409600

約数和(自身を除く): 70658205

約数列:

[1, 3, 5, 11, 15, 19, 33, 55, 57, 89, 95, 165, 209, 267, 285, 293, 445, 627, 879, 979, 1045, 1335, 1465, 1691, 2937, 3135, 3223, 4395, 4895, 5073, 5567, 8455, 9669, 14685, 16115, 16701, 18601, 25365, 26077, 27835, 48345, 55803, 61237, 78231, 83505, 93005, 130385, 183711, 279015, 286847, 306185, 391155, 495463, 860541, 918555, 1434235, 1486389, 2477315, 4302705, 5450093, 7431945, 16350279, 27250465, 81751395]

約数ペア:

[(1, 81751395), (3, 27250465), (5, 16350279), (11, 7431945), (15, 5450093), (19, 4302705), (33, 2477315), (55, 1486389), (57, 1434235), (89, 918555), (95, 860541), (165, 495463), (209, 391155), (267, 306185), (285, 286847), (293, 279015), (445, 183711), (627, 130385), (879, 93005), (979, 83505), (1045, 78231), (1335, 61237), (1465, 55803), (1691, 48345), (2937, 27835), (3135, 26077), (3223, 25365), (4395, 18601), (4895, 16701), (5073, 16115), (5567, 14685), (8455, 9669)]