21360640

素因数分解:

$2^{12}\times 5^1\times 7^1\times {\mathrm{149}}^1$

素因数の和:185

約数の個数: 104

約数和(自身を含む): 58975200

約数和(自身を除く): 37614560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 149, 160, 224, 256, 280, 298, 320, 448, 512, 560, 596, 640, 745, 896, 1024, 1043, 1120, 1192, 1280, 1490, 1792, 2048, 2086, 2240, 2384, 2560, 2980, 3584, 4096, 4172, 4480, 4768, 5120, 5215, 5960, 7168, 8344, 8960, 9536, 10240, 10430, 11920, 14336, 16688, 17920, 19072, 20480, 20860, 23840, 28672, 33376, 35840, 38144, 41720, 47680, 66752, 71680, 76288, 83440, 95360, 133504, 143360, 152576, 166880, 190720, 267008, 305152, 333760, 381440, 534016, 610304, 667520, 762880, 1068032, 1335040, 1525760, 2136064, 2670080, 3051520, 4272128, 5340160, 10680320, 21360640]

約数ペア:

[(1, 21360640), (2, 10680320), (4, 5340160), (5, 4272128), (7, 3051520), (8, 2670080), (10, 2136064), (14, 1525760), (16, 1335040), (20, 1068032), (28, 762880), (32, 667520), (35, 610304), (40, 534016), (56, 381440), (64, 333760), (70, 305152), (80, 267008), (112, 190720), (128, 166880), (140, 152576), (149, 143360), (160, 133504), (224, 95360), (256, 83440), (280, 76288), (298, 71680), (320, 66752), (448, 47680), (512, 41720), (560, 38144), (596, 35840), (640, 33376), (745, 28672), (896, 23840), (1024, 20860), (1043, 20480), (1120, 19072), (1192, 17920), (1280, 16688), (1490, 14336), (1792, 11920), (2048, 10430), (2086, 10240), (2240, 9536), (2384, 8960), (2560, 8344), (2980, 7168), (3584, 5960), (4096, 5215), (4172, 5120), (4480, 4768)]