131405895

素因数分解:

$3^7\times 5^1\times {\mathrm{61}}^1\times {\mathrm{197}}^1$

素因数の和:284

約数の個数: 64

約数和(自身を含む): 241591680

約数和(自身を除く): 110185785

約数列:

[1, 3, 5, 9, 15, 27, 45, 61, 81, 135, 183, 197, 243, 305, 405, 549, 591, 729, 915, 985, 1215, 1647, 1773, 2187, 2745, 2955, 3645, 4941, 5319, 8235, 8865, 10935, 12017, 14823, 15957, 24705, 26595, 36051, 44469, 47871, 60085, 74115, 79785, 108153, 133407, 143613, 180255, 222345, 239355, 324459, 430839, 540765, 667035, 718065, 973377, 1622295, 2154195, 2920131, 4866885, 8760393, 14600655, 26281179, 43801965, 131405895]

約数ペア:

[(1, 131405895), (3, 43801965), (5, 26281179), (9, 14600655), (15, 8760393), (27, 4866885), (45, 2920131), (61, 2154195), (81, 1622295), (135, 973377), (183, 718065), (197, 667035), (243, 540765), (305, 430839), (405, 324459), (549, 239355), (591, 222345), (729, 180255), (915, 143613), (985, 133407), (1215, 108153), (1647, 79785), (1773, 74115), (2187, 60085), (2745, 47871), (2955, 44469), (3645, 36051), (4941, 26595), (5319, 24705), (8235, 15957), (8865, 14823), (10935, 12017)]