20556240

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{883}}^1$

素因数の和:996

約数の個数: 80

約数和(自身を含む): 64454208

約数和(自身を除く): 43897968

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 97, 120, 194, 240, 291, 388, 485, 582, 776, 883, 970, 1164, 1455, 1552, 1766, 1940, 2328, 2649, 2910, 3532, 3880, 4415, 4656, 5298, 5820, 7064, 7760, 8830, 10596, 11640, 13245, 14128, 17660, 21192, 23280, 26490, 35320, 42384, 52980, 70640, 85651, 105960, 171302, 211920, 256953, 342604, 428255, 513906, 685208, 856510, 1027812, 1284765, 1370416, 1713020, 2055624, 2569530, 3426040, 4111248, 5139060, 6852080, 10278120, 20556240]

約数ペア:

[(1, 20556240), (2, 10278120), (3, 6852080), (4, 5139060), (5, 4111248), (6, 3426040), (8, 2569530), (10, 2055624), (12, 1713020), (15, 1370416), (16, 1284765), (20, 1027812), (24, 856510), (30, 685208), (40, 513906), (48, 428255), (60, 342604), (80, 256953), (97, 211920), (120, 171302), (194, 105960), (240, 85651), (291, 70640), (388, 52980), (485, 42384), (582, 35320), (776, 26490), (883, 23280), (970, 21192), (1164, 17660), (1455, 14128), (1552, 13245), (1766, 11640), (1940, 10596), (2328, 8830), (2649, 7760), (2910, 7064), (3532, 5820), (3880, 5298), (4415, 4656)]