21007360

素因数分解:

$2^{10}\times 5^1\times {\mathrm{11}}^1\times {\mathrm{373}}^1$

素因数の和:409

約数の個数: 88

約数和(自身を含む): 55121616

約数和(自身を除く): 34114256

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 352, 373, 440, 512, 640, 704, 746, 880, 1024, 1280, 1408, 1492, 1760, 1865, 2560, 2816, 2984, 3520, 3730, 4103, 5120, 5632, 5968, 7040, 7460, 8206, 11264, 11936, 14080, 14920, 16412, 20515, 23872, 28160, 29840, 32824, 41030, 47744, 56320, 59680, 65648, 82060, 95488, 119360, 131296, 164120, 190976, 238720, 262592, 328240, 381952, 477440, 525184, 656480, 954880, 1050368, 1312960, 1909760, 2100736, 2625920, 4201472, 5251840, 10503680, 21007360]

約数ペア:

[(1, 21007360), (2, 10503680), (4, 5251840), (5, 4201472), (8, 2625920), (10, 2100736), (11, 1909760), (16, 1312960), (20, 1050368), (22, 954880), (32, 656480), (40, 525184), (44, 477440), (55, 381952), (64, 328240), (80, 262592), (88, 238720), (110, 190976), (128, 164120), (160, 131296), (176, 119360), (220, 95488), (256, 82060), (320, 65648), (352, 59680), (373, 56320), (440, 47744), (512, 41030), (640, 32824), (704, 29840), (746, 28160), (880, 23872), (1024, 20515), (1280, 16412), (1408, 14920), (1492, 14080), (1760, 11936), (1865, 11264), (2560, 8206), (2816, 7460), (2984, 7040), (3520, 5968), (3730, 5632), (4103, 5120)]