19776640

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2377}}^1$

素因数の和:2409

約数の個数: 64

約数和(自身を含む): 50936760

約数和(自身を除く): 31160120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 1040, 1664, 2080, 2377, 4160, 4754, 8320, 9508, 11885, 19016, 23770, 30901, 38032, 47540, 61802, 76064, 95080, 123604, 152128, 154505, 190160, 247208, 304256, 309010, 380320, 494416, 618020, 760640, 988832, 1236040, 1521280, 1977664, 2472080, 3955328, 4944160, 9888320, 19776640]

約数ペア:

[(1, 19776640), (2, 9888320), (4, 4944160), (5, 3955328), (8, 2472080), (10, 1977664), (13, 1521280), (16, 1236040), (20, 988832), (26, 760640), (32, 618020), (40, 494416), (52, 380320), (64, 309010), (65, 304256), (80, 247208), (104, 190160), (128, 154505), (130, 152128), (160, 123604), (208, 95080), (260, 76064), (320, 61802), (416, 47540), (520, 38032), (640, 30901), (832, 23770), (1040, 19016), (1664, 11885), (2080, 9508), (2377, 8320), (4160, 4754)]