18015920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1019}}^1$

素因数の和:1062

約数の個数: 80

約数和(自身を含む): 47809440

約数和(自身を除く): 29793520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 34, 40, 52, 65, 68, 80, 85, 104, 130, 136, 170, 208, 221, 260, 272, 340, 442, 520, 680, 884, 1019, 1040, 1105, 1360, 1768, 2038, 2210, 3536, 4076, 4420, 5095, 8152, 8840, 10190, 13247, 16304, 17323, 17680, 20380, 26494, 34646, 40760, 52988, 66235, 69292, 81520, 86615, 105976, 132470, 138584, 173230, 211952, 225199, 264940, 277168, 346460, 450398, 529880, 692920, 900796, 1059760, 1125995, 1385840, 1801592, 2251990, 3603184, 4503980, 9007960, 18015920]

約数ペア:

[(1, 18015920), (2, 9007960), (4, 4503980), (5, 3603184), (8, 2251990), (10, 1801592), (13, 1385840), (16, 1125995), (17, 1059760), (20, 900796), (26, 692920), (34, 529880), (40, 450398), (52, 346460), (65, 277168), (68, 264940), (80, 225199), (85, 211952), (104, 173230), (130, 138584), (136, 132470), (170, 105976), (208, 86615), (221, 81520), (260, 69292), (272, 66235), (340, 52988), (442, 40760), (520, 34646), (680, 26494), (884, 20380), (1019, 17680), (1040, 17323), (1105, 16304), (1360, 13247), (1768, 10190), (2038, 8840), (2210, 8152), (3536, 5095), (4076, 4420)]