20470540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{241}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 44884224

約数和(自身を除く): 24413684

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 137, 155, 241, 274, 310, 482, 548, 620, 685, 964, 1205, 1370, 2410, 2740, 4247, 4820, 7471, 8494, 14942, 16988, 21235, 29884, 33017, 37355, 42470, 66034, 74710, 84940, 132068, 149420, 165085, 330170, 660340, 1023527, 2047054, 4094108, 5117635, 10235270, 20470540]

約数ペア:

[(1, 20470540), (2, 10235270), (4, 5117635), (5, 4094108), (10, 2047054), (20, 1023527), (31, 660340), (62, 330170), (124, 165085), (137, 149420), (155, 132068), (241, 84940), (274, 74710), (310, 66034), (482, 42470), (548, 37355), (620, 33017), (685, 29884), (964, 21235), (1205, 16988), (1370, 14942), (2410, 8494), (2740, 7471), (4247, 4820)]