21474160

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{6547}}^1$

素因数の和:6601

約数の個数: 40

約数和(自身を含む): 51152976

約数和(自身を除く): 29678816

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 6547, 13094, 26188, 32735, 52376, 65470, 104752, 130940, 261880, 268427, 523760, 536854, 1073708, 1342135, 2147416, 2684270, 4294832, 5368540, 10737080, 21474160]

約数ペア:

[(1, 21474160), (2, 10737080), (4, 5368540), (5, 4294832), (8, 2684270), (10, 2147416), (16, 1342135), (20, 1073708), (40, 536854), (41, 523760), (80, 268427), (82, 261880), (164, 130940), (205, 104752), (328, 65470), (410, 52376), (656, 32735), (820, 26188), (1640, 13094), (3280, 6547)]