20278300912

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{244529}}^1$

素因数の和:244681

約数の個数: 40

約数和(自身を含む): 40388531040

約数和(自身を除く): 20110230128

約数列:

[1, 2, 4, 8, 16, 71, 73, 142, 146, 284, 292, 568, 584, 1136, 1168, 5183, 10366, 20732, 41464, 82928, 244529, 489058, 978116, 1956232, 3912464, 17361559, 17850617, 34723118, 35701234, 69446236, 71402468, 138892472, 142804936, 277784944, 285609872, 1267393807, 2534787614, 5069575228, 10139150456, 20278300912]

約数ペア:

[(1, 20278300912), (2, 10139150456), (4, 5069575228), (8, 2534787614), (16, 1267393807), (71, 285609872), (73, 277784944), (142, 142804936), (146, 138892472), (284, 71402468), (292, 69446236), (568, 35701234), (584, 34723118), (1136, 17850617), (1168, 17361559), (5183, 3912464), (10366, 1956232), (20732, 978116), (41464, 489058), (82928, 244529)]