20735220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{353}}^1$

素因数の和:465

約数の個数: 96

約数和(自身を含む): 64229760

約数和(自身を除く): 43494540

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 89, 110, 132, 165, 178, 220, 267, 330, 353, 356, 445, 534, 660, 706, 890, 979, 1059, 1068, 1335, 1412, 1765, 1780, 1958, 2118, 2670, 2937, 3530, 3883, 3916, 4236, 4895, 5295, 5340, 5874, 7060, 7766, 9790, 10590, 11649, 11748, 14685, 15532, 19415, 19580, 21180, 23298, 29370, 31417, 38830, 46596, 58245, 58740, 62834, 77660, 94251, 116490, 125668, 157085, 188502, 232980, 314170, 345587, 377004, 471255, 628340, 691174, 942510, 1036761, 1382348, 1727935, 1885020, 2073522, 3455870, 4147044, 5183805, 6911740, 10367610, 20735220]

約数ペア:

[(1, 20735220), (2, 10367610), (3, 6911740), (4, 5183805), (5, 4147044), (6, 3455870), (10, 2073522), (11, 1885020), (12, 1727935), (15, 1382348), (20, 1036761), (22, 942510), (30, 691174), (33, 628340), (44, 471255), (55, 377004), (60, 345587), (66, 314170), (89, 232980), (110, 188502), (132, 157085), (165, 125668), (178, 116490), (220, 94251), (267, 77660), (330, 62834), (353, 58740), (356, 58245), (445, 46596), (534, 38830), (660, 31417), (706, 29370), (890, 23298), (979, 21180), (1059, 19580), (1068, 19415), (1335, 15532), (1412, 14685), (1765, 11748), (1780, 11649), (1958, 10590), (2118, 9790), (2670, 7766), (2937, 7060), (3530, 5874), (3883, 5340), (3916, 5295), (4236, 4895)]