20038720

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4817}}^1$

素因数の和:4847

約数の個数: 56

約数和(自身を含む): 51398424

約数和(自身を除く): 31359704

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 4817, 9634, 19268, 24085, 38536, 48170, 62621, 77072, 96340, 125242, 154144, 192680, 250484, 308288, 313105, 385360, 500968, 626210, 770720, 1001936, 1252420, 1541440, 2003872, 2504840, 4007744, 5009680, 10019360, 20038720]

約数ペア:

[(1, 20038720), (2, 10019360), (4, 5009680), (5, 4007744), (8, 2504840), (10, 2003872), (13, 1541440), (16, 1252420), (20, 1001936), (26, 770720), (32, 626210), (40, 500968), (52, 385360), (64, 313105), (65, 308288), (80, 250484), (104, 192680), (130, 154144), (160, 125242), (208, 96340), (260, 77072), (320, 62621), (416, 48170), (520, 38536), (832, 24085), (1040, 19268), (2080, 9634), (4160, 4817)]