1813760

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1$

素因数の和:143

約数の個数: 72

約数和(自身を含む): 4721640

約数和(自身を除く): 2907880

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 109, 128, 130, 160, 208, 218, 256, 260, 320, 416, 436, 520, 545, 640, 832, 872, 1040, 1090, 1280, 1417, 1664, 1744, 2080, 2180, 2834, 3328, 3488, 4160, 4360, 5668, 6976, 7085, 8320, 8720, 11336, 13952, 14170, 16640, 17440, 22672, 27904, 28340, 34880, 45344, 56680, 69760, 90688, 113360, 139520, 181376, 226720, 362752, 453440, 906880, 1813760]

約数ペア:

[(1, 1813760), (2, 906880), (4, 453440), (5, 362752), (8, 226720), (10, 181376), (13, 139520), (16, 113360), (20, 90688), (26, 69760), (32, 56680), (40, 45344), (52, 34880), (64, 28340), (65, 27904), (80, 22672), (104, 17440), (109, 16640), (128, 14170), (130, 13952), (160, 11336), (208, 8720), (218, 8320), (256, 7085), (260, 6976), (320, 5668), (416, 4360), (436, 4160), (520, 3488), (545, 3328), (640, 2834), (832, 2180), (872, 2080), (1040, 1744), (1090, 1664), (1280, 1417)]