21333560

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{347}}^1$

素因数の和:440

約数の個数: 64

約数和(自身を含む): 50738400

約数和(自身を除く): 29404840

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 53, 58, 106, 116, 145, 212, 232, 265, 290, 347, 424, 530, 580, 694, 1060, 1160, 1388, 1537, 1735, 2120, 2776, 3074, 3470, 6148, 6940, 7685, 10063, 12296, 13880, 15370, 18391, 20126, 30740, 36782, 40252, 50315, 61480, 73564, 80504, 91955, 100630, 147128, 183910, 201260, 367820, 402520, 533339, 735640, 1066678, 2133356, 2666695, 4266712, 5333390, 10666780, 21333560]

約数ペア:

[(1, 21333560), (2, 10666780), (4, 5333390), (5, 4266712), (8, 2666695), (10, 2133356), (20, 1066678), (29, 735640), (40, 533339), (53, 402520), (58, 367820), (106, 201260), (116, 183910), (145, 147128), (212, 100630), (232, 91955), (265, 80504), (290, 73564), (347, 61480), (424, 50315), (530, 40252), (580, 36782), (694, 30740), (1060, 20126), (1160, 18391), (1388, 15370), (1537, 13880), (1735, 12296), (2120, 10063), (2776, 7685), (3074, 6940), (3470, 6148)]