19680064

素因数分解:

$2^6\times {\mathrm{61}}^1\times {\mathrm{71}}^2$

素因数の和:215

約数の個数: 42

約数和(自身を含む): 40259762

約数和(自身を除く): 20579698

約数列:

[1, 2, 4, 8, 16, 32, 61, 64, 71, 122, 142, 244, 284, 488, 568, 976, 1136, 1952, 2272, 3904, 4331, 4544, 5041, 8662, 10082, 17324, 20164, 34648, 40328, 69296, 80656, 138592, 161312, 277184, 307501, 322624, 615002, 1230004, 2460008, 4920016, 9840032, 19680064]

約数ペア:

[(1, 19680064), (2, 9840032), (4, 4920016), (8, 2460008), (16, 1230004), (32, 615002), (61, 322624), (64, 307501), (71, 277184), (122, 161312), (142, 138592), (244, 80656), (284, 69296), (488, 40328), (568, 34648), (976, 20164), (1136, 17324), (1952, 10082), (2272, 8662), (3904, 5041), (4331, 4544)]