21590065

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{239}}^1$

素因数の和:369

約数の個数: 32

約数和(自身を含む): 31104000

約数和(自身を除く): 9513935

約数列:

[1, 5, 7, 29, 35, 89, 145, 203, 239, 445, 623, 1015, 1195, 1673, 2581, 3115, 6931, 8365, 12905, 18067, 21271, 34655, 48517, 90335, 106355, 148897, 242585, 616859, 744485, 3084295, 4318013, 21590065]

約数ペア:

[(1, 21590065), (5, 4318013), (7, 3084295), (29, 744485), (35, 616859), (89, 242585), (145, 148897), (203, 106355), (239, 90335), (445, 48517), (623, 34655), (1015, 21271), (1195, 18067), (1673, 12905), (2581, 8365), (3115, 6931)]