18518960

素因数分解:

$2^4\times 5^1\times {\mathrm{83}}^1\times {\mathrm{2789}}^1$

素因数の和:2885

約数の個数: 40

約数和(自身を含む): 43590960

約数和(自身を除く): 25072000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 83, 166, 332, 415, 664, 830, 1328, 1660, 2789, 3320, 5578, 6640, 11156, 13945, 22312, 27890, 44624, 55780, 111560, 223120, 231487, 462974, 925948, 1157435, 1851896, 2314870, 3703792, 4629740, 9259480, 18518960]

約数ペア:

[(1, 18518960), (2, 9259480), (4, 4629740), (5, 3703792), (8, 2314870), (10, 1851896), (16, 1157435), (20, 925948), (40, 462974), (80, 231487), (83, 223120), (166, 111560), (332, 55780), (415, 44624), (664, 27890), (830, 22312), (1328, 13945), (1660, 11156), (2789, 6640), (3320, 5578)]