21492496

素因数分解:

$2^4\times {\mathrm{19}}^2\times {\mathrm{61}}^2$

素因数の和:168

約数の個数: 45

約数和(自身を含む): 44681013

約数和(自身を除く): 23188517

約数列:

[1, 2, 4, 8, 16, 19, 38, 61, 76, 122, 152, 244, 304, 361, 488, 722, 976, 1159, 1444, 2318, 2888, 3721, 4636, 5776, 7442, 9272, 14884, 18544, 22021, 29768, 44042, 59536, 70699, 88084, 141398, 176168, 282796, 352336, 565592, 1131184, 1343281, 2686562, 5373124, 10746248, 21492496]

約数ペア:

[(1, 21492496), (2, 10746248), (4, 5373124), (8, 2686562), (16, 1343281), (19, 1131184), (38, 565592), (61, 352336), (76, 282796), (122, 176168), (152, 141398), (244, 88084), (304, 70699), (361, 59536), (488, 44042), (722, 29768), (976, 22021), (1159, 18544), (1444, 14884), (2318, 9272), (2888, 7442), (3721, 5776)]