18509840

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{3793}}^1$

素因数の和:3867

約数の個数: 40

約数和(自身を含む): 43752408

約数和(自身を除く): 25242568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 3793, 4880, 7586, 15172, 18965, 30344, 37930, 60688, 75860, 151720, 231373, 303440, 462746, 925492, 1156865, 1850984, 2313730, 3701968, 4627460, 9254920, 18509840]

約数ペア:

[(1, 18509840), (2, 9254920), (4, 4627460), (5, 3701968), (8, 2313730), (10, 1850984), (16, 1156865), (20, 925492), (40, 462746), (61, 303440), (80, 231373), (122, 151720), (244, 75860), (305, 60688), (488, 37930), (610, 30344), (976, 18965), (1220, 15172), (2440, 7586), (3793, 4880)]