28360520

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{17293}}^1$

素因数の和:17345

約数の個数: 32

約数和(自身を含む): 65371320

約数和(自身を除く): 37010800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 17293, 34586, 69172, 86465, 138344, 172930, 345860, 691720, 709013, 1418026, 2836052, 3545065, 5672104, 7090130, 14180260, 28360520]

約数ペア:

[(1, 28360520), (2, 14180260), (4, 7090130), (5, 5672104), (8, 3545065), (10, 2836052), (20, 1418026), (40, 709013), (41, 691720), (82, 345860), (164, 172930), (205, 138344), (328, 86465), (410, 69172), (820, 34586), (1640, 17293)]