21773840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{227}}^1$

素因数の和:360

約数の個数: 80

約数和(自身を含む): 55978560

約数和(自身を除く): 34204720

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 109, 110, 176, 218, 220, 227, 436, 440, 454, 545, 872, 880, 908, 1090, 1135, 1199, 1744, 1816, 2180, 2270, 2398, 2497, 3632, 4360, 4540, 4796, 4994, 5995, 8720, 9080, 9592, 9988, 11990, 12485, 18160, 19184, 19976, 23980, 24743, 24970, 39952, 47960, 49486, 49940, 95920, 98972, 99880, 123715, 197944, 199760, 247430, 272173, 395888, 494860, 544346, 989720, 1088692, 1360865, 1979440, 2177384, 2721730, 4354768, 5443460, 10886920, 21773840]

約数ペア:

[(1, 21773840), (2, 10886920), (4, 5443460), (5, 4354768), (8, 2721730), (10, 2177384), (11, 1979440), (16, 1360865), (20, 1088692), (22, 989720), (40, 544346), (44, 494860), (55, 395888), (80, 272173), (88, 247430), (109, 199760), (110, 197944), (176, 123715), (218, 99880), (220, 98972), (227, 95920), (436, 49940), (440, 49486), (454, 47960), (545, 39952), (872, 24970), (880, 24743), (908, 23980), (1090, 19976), (1135, 19184), (1199, 18160), (1744, 12485), (1816, 11990), (2180, 9988), (2270, 9592), (2398, 9080), (2497, 8720), (3632, 5995), (4360, 4994), (4540, 4796)]