18950920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^2$

素因数の和:119

約数の個数: 96

約数和(自身を含む): 48259800

約数和(自身を除く): 29308880

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 29, 31, 34, 40, 58, 62, 68, 85, 116, 124, 136, 145, 155, 170, 232, 248, 290, 310, 340, 493, 527, 580, 620, 680, 899, 961, 986, 1054, 1160, 1240, 1798, 1922, 1972, 2108, 2465, 2635, 3596, 3844, 3944, 4216, 4495, 4805, 4930, 5270, 7192, 7688, 8990, 9610, 9860, 10540, 15283, 16337, 17980, 19220, 19720, 21080, 27869, 30566, 32674, 35960, 38440, 55738, 61132, 65348, 76415, 81685, 111476, 122264, 130696, 139345, 152830, 163370, 222952, 278690, 305660, 326740, 473773, 557380, 611320, 653480, 947546, 1114760, 1895092, 2368865, 3790184, 4737730, 9475460, 18950920]

約数ペア:

[(1, 18950920), (2, 9475460), (4, 4737730), (5, 3790184), (8, 2368865), (10, 1895092), (17, 1114760), (20, 947546), (29, 653480), (31, 611320), (34, 557380), (40, 473773), (58, 326740), (62, 305660), (68, 278690), (85, 222952), (116, 163370), (124, 152830), (136, 139345), (145, 130696), (155, 122264), (170, 111476), (232, 81685), (248, 76415), (290, 65348), (310, 61132), (340, 55738), (493, 38440), (527, 35960), (580, 32674), (620, 30566), (680, 27869), (899, 21080), (961, 19720), (986, 19220), (1054, 17980), (1160, 16337), (1240, 15283), (1798, 10540), (1922, 9860), (1972, 9610), (2108, 8990), (2465, 7688), (2635, 7192), (3596, 5270), (3844, 4930), (3944, 4805), (4216, 4495)]