21467120

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1$

素因数の和:210

約数の個数: 80

約数和(自身を含む): 52309152

約数和(自身を除く): 30842032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 61, 80, 83, 106, 122, 166, 212, 244, 265, 305, 332, 415, 424, 488, 530, 610, 664, 830, 848, 976, 1060, 1220, 1328, 1660, 2120, 2440, 3233, 3320, 4240, 4399, 4880, 5063, 6466, 6640, 8798, 10126, 12932, 16165, 17596, 20252, 21995, 25315, 25864, 32330, 35192, 40504, 43990, 50630, 51728, 64660, 70384, 81008, 87980, 101260, 129320, 175960, 202520, 258640, 268339, 351920, 405040, 536678, 1073356, 1341695, 2146712, 2683390, 4293424, 5366780, 10733560, 21467120]

約数ペア:

[(1, 21467120), (2, 10733560), (4, 5366780), (5, 4293424), (8, 2683390), (10, 2146712), (16, 1341695), (20, 1073356), (40, 536678), (53, 405040), (61, 351920), (80, 268339), (83, 258640), (106, 202520), (122, 175960), (166, 129320), (212, 101260), (244, 87980), (265, 81008), (305, 70384), (332, 64660), (415, 51728), (424, 50630), (488, 43990), (530, 40504), (610, 35192), (664, 32330), (830, 25864), (848, 25315), (976, 21995), (1060, 20252), (1220, 17596), (1328, 16165), (1660, 12932), (2120, 10126), (2440, 8798), (3233, 6640), (3320, 6466), (4240, 5063), (4399, 4880)]