18090880

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1229}}^1$

素因数の和:1271

約数の個数: 64

約数和(自身を含む): 45165600

約数和(自身を除く): 27074720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 184, 230, 320, 368, 460, 640, 736, 920, 1229, 1472, 1840, 2458, 2944, 3680, 4916, 6145, 7360, 9832, 12290, 14720, 19664, 24580, 28267, 39328, 49160, 56534, 78656, 98320, 113068, 141335, 157312, 196640, 226136, 282670, 393280, 452272, 565340, 786560, 904544, 1130680, 1809088, 2261360, 3618176, 4522720, 9045440, 18090880]

約数ペア:

[(1, 18090880), (2, 9045440), (4, 4522720), (5, 3618176), (8, 2261360), (10, 1809088), (16, 1130680), (20, 904544), (23, 786560), (32, 565340), (40, 452272), (46, 393280), (64, 282670), (80, 226136), (92, 196640), (115, 157312), (128, 141335), (160, 113068), (184, 98320), (230, 78656), (320, 56534), (368, 49160), (460, 39328), (640, 28267), (736, 24580), (920, 19664), (1229, 14720), (1472, 12290), (1840, 9832), (2458, 7360), (2944, 6145), (3680, 4916)]