21723520

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{373}}^1$

素因数の和:412

約数の個数: 128

約数和(自身を含む): 64088640

約数和(自身を除く): 42365120

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 64, 65, 70, 80, 91, 104, 112, 128, 130, 140, 160, 182, 208, 224, 260, 280, 320, 364, 373, 416, 448, 455, 520, 560, 640, 728, 746, 832, 896, 910, 1040, 1120, 1456, 1492, 1664, 1820, 1865, 2080, 2240, 2611, 2912, 2984, 3640, 3730, 4160, 4480, 4849, 5222, 5824, 5968, 7280, 7460, 8320, 9698, 10444, 11648, 11936, 13055, 14560, 14920, 19396, 20888, 23872, 24245, 26110, 29120, 29840, 33943, 38792, 41776, 47744, 48490, 52220, 58240, 59680, 67886, 77584, 83552, 96980, 104440, 119360, 135772, 155168, 167104, 169715, 193960, 208880, 238720, 271544, 310336, 334208, 339430, 387920, 417760, 543088, 620672, 678860, 775840, 835520, 1086176, 1357720, 1551680, 1671040, 2172352, 2715440, 3103360, 4344704, 5430880, 10861760, 21723520]

約数ペア:

[(1, 21723520), (2, 10861760), (4, 5430880), (5, 4344704), (7, 3103360), (8, 2715440), (10, 2172352), (13, 1671040), (14, 1551680), (16, 1357720), (20, 1086176), (26, 835520), (28, 775840), (32, 678860), (35, 620672), (40, 543088), (52, 417760), (56, 387920), (64, 339430), (65, 334208), (70, 310336), (80, 271544), (91, 238720), (104, 208880), (112, 193960), (128, 169715), (130, 167104), (140, 155168), (160, 135772), (182, 119360), (208, 104440), (224, 96980), (260, 83552), (280, 77584), (320, 67886), (364, 59680), (373, 58240), (416, 52220), (448, 48490), (455, 47744), (520, 41776), (560, 38792), (640, 33943), (728, 29840), (746, 29120), (832, 26110), (896, 24245), (910, 23872), (1040, 20888), (1120, 19396), (1456, 14920), (1492, 14560), (1664, 13055), (1820, 11936), (1865, 11648), (2080, 10444), (2240, 9698), (2611, 8320), (2912, 7460), (2984, 7280), (3640, 5968), (3730, 5824), (4160, 5222), (4480, 4849)]