20903584

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{461}}^1$

素因数の和:593

約数の個数: 48

約数和(自身を含む): 44823240

約数和(自身を除く): 23919656

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 109, 208, 218, 416, 436, 461, 872, 922, 1417, 1744, 1844, 2834, 3488, 3688, 5668, 5993, 7376, 11336, 11986, 14752, 22672, 23972, 45344, 47944, 50249, 95888, 100498, 191776, 200996, 401992, 653237, 803984, 1306474, 1607968, 2612948, 5225896, 10451792, 20903584]

約数ペア:

[(1, 20903584), (2, 10451792), (4, 5225896), (8, 2612948), (13, 1607968), (16, 1306474), (26, 803984), (32, 653237), (52, 401992), (104, 200996), (109, 191776), (208, 100498), (218, 95888), (416, 50249), (436, 47944), (461, 45344), (872, 23972), (922, 22672), (1417, 14752), (1744, 11986), (1844, 11336), (2834, 7376), (3488, 5993), (3688, 5668)]