21330155

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{3259}}^1$

素因数の和:3299

約数の個数: 32

約数和(自身を含む): 33799680

約数和(自身を除く): 12469525

約数列:

[1, 5, 7, 11, 17, 35, 55, 77, 85, 119, 187, 385, 595, 935, 1309, 3259, 6545, 16295, 22813, 35849, 55403, 114065, 179245, 250943, 277015, 387821, 609433, 1254715, 1939105, 3047165, 4266031, 21330155]

約数ペア:

[(1, 21330155), (5, 4266031), (7, 3047165), (11, 1939105), (17, 1254715), (35, 609433), (55, 387821), (77, 277015), (85, 250943), (119, 179245), (187, 114065), (385, 55403), (595, 35849), (935, 22813), (1309, 16295), (3259, 6545)]