20020220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1$

素因数の和:191

約数の個数: 96

約数和(自身を含む): 49968576

約数和(自身を除く): 29948356

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 53, 55, 68, 85, 101, 106, 110, 170, 187, 202, 212, 220, 265, 340, 374, 404, 505, 530, 583, 748, 901, 935, 1010, 1060, 1111, 1166, 1717, 1802, 1870, 2020, 2222, 2332, 2915, 3434, 3604, 3740, 4444, 4505, 5353, 5555, 5830, 6868, 8585, 9010, 9911, 10706, 11110, 11660, 17170, 18020, 18887, 19822, 21412, 22220, 26765, 34340, 37774, 39644, 49555, 53530, 58883, 75548, 91001, 94435, 99110, 107060, 117766, 182002, 188870, 198220, 235532, 294415, 364004, 377740, 455005, 588830, 910010, 1001011, 1177660, 1820020, 2002022, 4004044, 5005055, 10010110, 20020220]

約数ペア:

[(1, 20020220), (2, 10010110), (4, 5005055), (5, 4004044), (10, 2002022), (11, 1820020), (17, 1177660), (20, 1001011), (22, 910010), (34, 588830), (44, 455005), (53, 377740), (55, 364004), (68, 294415), (85, 235532), (101, 198220), (106, 188870), (110, 182002), (170, 117766), (187, 107060), (202, 99110), (212, 94435), (220, 91001), (265, 75548), (340, 58883), (374, 53530), (404, 49555), (505, 39644), (530, 37774), (583, 34340), (748, 26765), (901, 22220), (935, 21412), (1010, 19822), (1060, 18887), (1111, 18020), (1166, 17170), (1717, 11660), (1802, 11110), (1870, 10706), (2020, 9911), (2222, 9010), (2332, 8585), (2915, 6868), (3434, 5830), (3604, 5555), (3740, 5353), (4444, 4505)]