21396045

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:186

約数の個数: 64

約数和(自身を含む): 39813120

約数和(自身を除く): 18417075

約数列:

[1, 3, 5, 11, 15, 31, 33, 47, 55, 89, 93, 141, 155, 165, 235, 267, 341, 445, 465, 517, 705, 979, 1023, 1335, 1457, 1551, 1705, 2585, 2759, 2937, 4183, 4371, 4895, 5115, 7285, 7755, 8277, 12549, 13795, 14685, 16027, 20915, 21855, 30349, 41385, 46013, 48081, 62745, 80135, 91047, 129673, 138039, 151745, 230065, 240405, 389019, 455235, 648365, 690195, 1426403, 1945095, 4279209, 7132015, 21396045]

約数ペア:

[(1, 21396045), (3, 7132015), (5, 4279209), (11, 1945095), (15, 1426403), (31, 690195), (33, 648365), (47, 455235), (55, 389019), (89, 240405), (93, 230065), (141, 151745), (155, 138039), (165, 129673), (235, 91047), (267, 80135), (341, 62745), (445, 48081), (465, 46013), (517, 41385), (705, 30349), (979, 21855), (1023, 20915), (1335, 16027), (1457, 14685), (1551, 13795), (1705, 12549), (2585, 8277), (2759, 7755), (2937, 7285), (4183, 5115), (4371, 4895)]