20291635

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{277}}^1$

素因数の和:332

約数の個数: 48

約数和(自身を含む): 31945536

約数和(自身を除く): 11653901

約数列:

[1, 5, 7, 13, 23, 35, 49, 65, 91, 115, 161, 245, 277, 299, 455, 637, 805, 1127, 1385, 1495, 1939, 2093, 3185, 3601, 5635, 6371, 9695, 10465, 13573, 14651, 18005, 25207, 31855, 44597, 67865, 73255, 82823, 126035, 176449, 222985, 312179, 414115, 579761, 882245, 1560895, 2898805, 4058327, 20291635]

約数ペア:

[(1, 20291635), (5, 4058327), (7, 2898805), (13, 1560895), (23, 882245), (35, 579761), (49, 414115), (65, 312179), (91, 222985), (115, 176449), (161, 126035), (245, 82823), (277, 73255), (299, 67865), (455, 44597), (637, 31855), (805, 25207), (1127, 18005), (1385, 14651), (1495, 13573), (1939, 10465), (2093, 9695), (3185, 6371), (3601, 5635)]