221434880

素因数分解:

$2^{10}\times 5^1\times {\mathrm{61}}^1\times {\mathrm{709}}^1$

素因数の和:795

約数の個数: 88

約数和(自身を含む): 540653640

約数和(自身を除く): 319218760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 256, 305, 320, 488, 512, 610, 640, 709, 976, 1024, 1220, 1280, 1418, 1952, 2440, 2560, 2836, 3545, 3904, 4880, 5120, 5672, 7090, 7808, 9760, 11344, 14180, 15616, 19520, 22688, 28360, 31232, 39040, 43249, 45376, 56720, 62464, 78080, 86498, 90752, 113440, 156160, 172996, 181504, 216245, 226880, 312320, 345992, 363008, 432490, 453760, 691984, 726016, 864980, 907520, 1383968, 1729960, 1815040, 2767936, 3459920, 3630080, 5535872, 6919840, 11071744, 13839680, 22143488, 27679360, 44286976, 55358720, 110717440, 221434880]

約数ペア:

[(1, 221434880), (2, 110717440), (4, 55358720), (5, 44286976), (8, 27679360), (10, 22143488), (16, 13839680), (20, 11071744), (32, 6919840), (40, 5535872), (61, 3630080), (64, 3459920), (80, 2767936), (122, 1815040), (128, 1729960), (160, 1383968), (244, 907520), (256, 864980), (305, 726016), (320, 691984), (488, 453760), (512, 432490), (610, 363008), (640, 345992), (709, 312320), (976, 226880), (1024, 216245), (1220, 181504), (1280, 172996), (1418, 156160), (1952, 113440), (2440, 90752), (2560, 86498), (2836, 78080), (3545, 62464), (3904, 56720), (4880, 45376), (5120, 43249), (5672, 39040), (7090, 31232), (7808, 28360), (9760, 22688), (11344, 19520), (14180, 15616)]