20693120

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1$

素因数の和:206

約数の個数: 128

約数和(自身を含む): 58752000

約数和(自身を除く): 38058880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 64, 70, 80, 112, 124, 128, 140, 149, 155, 160, 217, 224, 248, 280, 298, 310, 320, 434, 448, 496, 560, 596, 620, 640, 745, 868, 896, 992, 1043, 1085, 1120, 1192, 1240, 1490, 1736, 1984, 2086, 2170, 2240, 2384, 2480, 2980, 3472, 3968, 4172, 4340, 4480, 4619, 4768, 4960, 5215, 5960, 6944, 8344, 8680, 9238, 9536, 9920, 10430, 11920, 13888, 16688, 17360, 18476, 19072, 19840, 20860, 23095, 23840, 27776, 32333, 33376, 34720, 36952, 41720, 46190, 47680, 64666, 66752, 69440, 73904, 83440, 92380, 95360, 129332, 133504, 138880, 147808, 161665, 166880, 184760, 258664, 295616, 323330, 333760, 369520, 517328, 591232, 646660, 667520, 739040, 1034656, 1293320, 1478080, 2069312, 2586640, 2956160, 4138624, 5173280, 10346560, 20693120]

約数ペア:

[(1, 20693120), (2, 10346560), (4, 5173280), (5, 4138624), (7, 2956160), (8, 2586640), (10, 2069312), (14, 1478080), (16, 1293320), (20, 1034656), (28, 739040), (31, 667520), (32, 646660), (35, 591232), (40, 517328), (56, 369520), (62, 333760), (64, 323330), (70, 295616), (80, 258664), (112, 184760), (124, 166880), (128, 161665), (140, 147808), (149, 138880), (155, 133504), (160, 129332), (217, 95360), (224, 92380), (248, 83440), (280, 73904), (298, 69440), (310, 66752), (320, 64666), (434, 47680), (448, 46190), (496, 41720), (560, 36952), (596, 34720), (620, 33376), (640, 32333), (745, 27776), (868, 23840), (896, 23095), (992, 20860), (1043, 19840), (1085, 19072), (1120, 18476), (1192, 17360), (1240, 16688), (1490, 13888), (1736, 11920), (1984, 10430), (2086, 9920), (2170, 9536), (2240, 9238), (2384, 8680), (2480, 8344), (2980, 6944), (3472, 5960), (3968, 5215), (4172, 4960), (4340, 4768), (4480, 4619)]