20603440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1801}}^1$

素因数の和:1838

約数の個数: 80

約数和(自身を含む): 56308896

約数和(自身を除く): 35705456

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 40, 44, 52, 55, 65, 80, 88, 104, 110, 130, 143, 176, 208, 220, 260, 286, 440, 520, 572, 715, 880, 1040, 1144, 1430, 1801, 2288, 2860, 3602, 5720, 7204, 9005, 11440, 14408, 18010, 19811, 23413, 28816, 36020, 39622, 46826, 72040, 79244, 93652, 99055, 117065, 144080, 158488, 187304, 198110, 234130, 257543, 316976, 374608, 396220, 468260, 515086, 792440, 936520, 1030172, 1287715, 1584880, 1873040, 2060344, 2575430, 4120688, 5150860, 10301720, 20603440]

約数ペア:

[(1, 20603440), (2, 10301720), (4, 5150860), (5, 4120688), (8, 2575430), (10, 2060344), (11, 1873040), (13, 1584880), (16, 1287715), (20, 1030172), (22, 936520), (26, 792440), (40, 515086), (44, 468260), (52, 396220), (55, 374608), (65, 316976), (80, 257543), (88, 234130), (104, 198110), (110, 187304), (130, 158488), (143, 144080), (176, 117065), (208, 99055), (220, 93652), (260, 79244), (286, 72040), (440, 46826), (520, 39622), (572, 36020), (715, 28816), (880, 23413), (1040, 19811), (1144, 18010), (1430, 14408), (1801, 11440), (2288, 9005), (2860, 7204), (3602, 5720)]