20149155

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:162

約数の個数: 80

約数和(自身を含む): 40249440

約数和(自身を除く): 20100285

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 43, 45, 65, 81, 89, 117, 129, 135, 195, 215, 267, 351, 387, 405, 445, 559, 585, 645, 801, 1053, 1157, 1161, 1335, 1677, 1755, 1935, 2403, 2795, 3471, 3483, 3827, 4005, 5031, 5265, 5785, 5805, 7209, 8385, 10413, 11481, 12015, 15093, 17355, 17415, 19135, 25155, 31239, 34443, 36045, 45279, 49751, 52065, 57405, 75465, 93717, 103329, 149253, 156195, 172215, 226395, 248755, 309987, 447759, 468585, 516645, 746265, 1343277, 1549935, 2238795, 4029831, 6716385, 20149155]

約数ペア:

[(1, 20149155), (3, 6716385), (5, 4029831), (9, 2238795), (13, 1549935), (15, 1343277), (27, 746265), (39, 516645), (43, 468585), (45, 447759), (65, 309987), (81, 248755), (89, 226395), (117, 172215), (129, 156195), (135, 149253), (195, 103329), (215, 93717), (267, 75465), (351, 57405), (387, 52065), (405, 49751), (445, 45279), (559, 36045), (585, 34443), (645, 31239), (801, 25155), (1053, 19135), (1157, 17415), (1161, 17355), (1335, 15093), (1677, 12015), (1755, 11481), (1935, 10413), (2403, 8385), (2795, 7209), (3471, 5805), (3483, 5785), (3827, 5265), (4005, 5031)]