20683980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{761}}^1$

素因数の和:927

約数の個数: 72

約数和(自身を含む): 63239904

約数和(自身を除く): 42555924

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 151, 180, 302, 453, 604, 755, 761, 906, 1359, 1510, 1522, 1812, 2265, 2283, 2718, 3020, 3044, 3805, 4530, 4566, 5436, 6795, 6849, 7610, 9060, 9132, 11415, 13590, 13698, 15220, 22830, 27180, 27396, 34245, 45660, 68490, 114911, 136980, 229822, 344733, 459644, 574555, 689466, 1034199, 1149110, 1378932, 1723665, 2068398, 2298220, 3447330, 4136796, 5170995, 6894660, 10341990, 20683980]

約数ペア:

[(1, 20683980), (2, 10341990), (3, 6894660), (4, 5170995), (5, 4136796), (6, 3447330), (9, 2298220), (10, 2068398), (12, 1723665), (15, 1378932), (18, 1149110), (20, 1034199), (30, 689466), (36, 574555), (45, 459644), (60, 344733), (90, 229822), (151, 136980), (180, 114911), (302, 68490), (453, 45660), (604, 34245), (755, 27396), (761, 27180), (906, 22830), (1359, 15220), (1510, 13698), (1522, 13590), (1812, 11415), (2265, 9132), (2283, 9060), (2718, 7610), (3020, 6849), (3044, 6795), (3805, 5436), (4530, 4566)]