20298075

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^2$

素因数の和:125

約数の個数: 72

約数和(自身を含む): 41021184

約数和(自身を除く): 20723109

約数列:

[1, 3, 5, 7, 15, 21, 23, 25, 35, 41, 69, 75, 105, 115, 123, 161, 175, 205, 287, 345, 483, 525, 575, 615, 805, 861, 943, 1025, 1435, 1681, 1725, 2415, 2829, 3075, 4025, 4305, 4715, 5043, 6601, 7175, 8405, 11767, 12075, 14145, 19803, 21525, 23575, 25215, 33005, 35301, 38663, 42025, 58835, 70725, 99015, 115989, 126075, 165025, 176505, 193315, 270641, 294175, 495075, 579945, 811923, 882525, 966575, 1353205, 2899725, 4059615, 6766025, 20298075]

約数ペア:

[(1, 20298075), (3, 6766025), (5, 4059615), (7, 2899725), (15, 1353205), (21, 966575), (23, 882525), (25, 811923), (35, 579945), (41, 495075), (69, 294175), (75, 270641), (105, 193315), (115, 176505), (123, 165025), (161, 126075), (175, 115989), (205, 99015), (287, 70725), (345, 58835), (483, 42025), (525, 38663), (575, 35301), (615, 33005), (805, 25215), (861, 23575), (943, 21525), (1025, 19803), (1435, 14145), (1681, 12075), (1725, 11767), (2415, 8405), (2829, 7175), (3075, 6601), (4025, 5043), (4305, 4715)]