20838272

素因数分解:

$2^7\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1789}}^1$

素因数の和:1823

約数の個数: 64

約数和(自身を含む): 51122400

約数和(自身を除く): 30284128

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 64, 91, 104, 112, 128, 182, 208, 224, 364, 416, 448, 728, 832, 896, 1456, 1664, 1789, 2912, 3578, 5824, 7156, 11648, 12523, 14312, 23257, 25046, 28624, 46514, 50092, 57248, 93028, 100184, 114496, 162799, 186056, 200368, 228992, 325598, 372112, 400736, 651196, 744224, 801472, 1302392, 1488448, 1602944, 2604784, 2976896, 5209568, 10419136, 20838272]

約数ペア:

[(1, 20838272), (2, 10419136), (4, 5209568), (7, 2976896), (8, 2604784), (13, 1602944), (14, 1488448), (16, 1302392), (26, 801472), (28, 744224), (32, 651196), (52, 400736), (56, 372112), (64, 325598), (91, 228992), (104, 200368), (112, 186056), (128, 162799), (182, 114496), (208, 100184), (224, 93028), (364, 57248), (416, 50092), (448, 46514), (728, 28624), (832, 25046), (896, 23257), (1456, 14312), (1664, 12523), (1789, 11648), (2912, 7156), (3578, 5824)]