398409968

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{31883}}^1$

素因数の和:31973

約数の個数: 40

約数和(自身を含む): 853981056

約数和(自身を除く): 455571088

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 71, 88, 142, 176, 284, 568, 781, 1136, 1562, 3124, 6248, 12496, 31883, 63766, 127532, 255064, 350713, 510128, 701426, 1402852, 2263693, 2805704, 4527386, 5611408, 9054772, 18109544, 24900623, 36219088, 49801246, 99602492, 199204984, 398409968]

約数ペア:

[(1, 398409968), (2, 199204984), (4, 99602492), (8, 49801246), (11, 36219088), (16, 24900623), (22, 18109544), (44, 9054772), (71, 5611408), (88, 4527386), (142, 2805704), (176, 2263693), (284, 1402852), (568, 701426), (781, 510128), (1136, 350713), (1562, 255064), (3124, 127532), (6248, 63766), (12496, 31883)]