20512605540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{211}}^2\times {\mathrm{1097}}^1$

素因数の和:1538

約数の個数: 144

約数和(自身を含む): 66013024896

約数和(自身を除く): 45500419356

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 211, 420, 422, 633, 844, 1055, 1097, 1266, 1477, 2110, 2194, 2532, 2954, 3165, 3291, 4220, 4388, 4431, 5485, 5908, 6330, 6582, 7385, 7679, 8862, 10970, 12660, 13164, 14770, 15358, 16455, 17724, 21940, 22155, 23037, 29540, 30716, 32910, 38395, 44310, 44521, 46074, 65820, 76790, 88620, 89042, 92148, 115185, 133563, 153580, 178084, 222605, 230370, 231467, 267126, 311647, 445210, 460740, 462934, 534252, 623294, 667815, 694401, 890420, 925868, 934941, 1157335, 1246588, 1335630, 1388802, 1558235, 1620269, 1869882, 2314670, 2671260, 2777604, 3116470, 3240538, 3472005, 3739764, 4629340, 4674705, 4860807, 6232940, 6481076, 6944010, 8101345, 9349410, 9721614, 13888020, 16202690, 18698820, 19443228, 24304035, 32405380, 48608070, 48839537, 97216140, 97679074, 146518611, 195358148, 244197685, 293037222, 341876759, 488395370, 586074444, 683753518, 732593055, 976790740, 1025630277, 1367507036, 1465186110, 1709383795, 2051260554, 2930372220, 3418767590, 4102521108, 5128151385, 6837535180, 10256302770, 20512605540]

約数ペア:

[(1, 20512605540), (2, 10256302770), (3, 6837535180), (4, 5128151385), (5, 4102521108), (6, 3418767590), (7, 2930372220), (10, 2051260554), (12, 1709383795), (14, 1465186110), (15, 1367507036), (20, 1025630277), (21, 976790740), (28, 732593055), (30, 683753518), (35, 586074444), (42, 488395370), (60, 341876759), (70, 293037222), (84, 244197685), (105, 195358148), (140, 146518611), (210, 97679074), (211, 97216140), (420, 48839537), (422, 48608070), (633, 32405380), (844, 24304035), (1055, 19443228), (1097, 18698820), (1266, 16202690), (1477, 13888020), (2110, 9721614), (2194, 9349410), (2532, 8101345), (2954, 6944010), (3165, 6481076), (3291, 6232940), (4220, 4860807), (4388, 4674705), (4431, 4629340), (5485, 3739764), (5908, 3472005), (6330, 3240538), (6582, 3116470), (7385, 2777604), (7679, 2671260), (8862, 2314670), (10970, 1869882), (12660, 1620269), (13164, 1558235), (14770, 1388802), (15358, 1335630), (16455, 1246588), (17724, 1157335), (21940, 934941), (22155, 925868), (23037, 890420), (29540, 694401), (30716, 667815), (32910, 623294), (38395, 534252), (44310, 462934), (44521, 460740), (46074, 445210), (65820, 311647), (76790, 267126), (88620, 231467), (89042, 230370), (92148, 222605), (115185, 178084), (133563, 153580)]