21681630

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{383}}^1$

素因数の和:450

約数の個数: 96

約数和(自身を含む): 61461504

約数和(自身を除く): 39779874

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 30, 34, 37, 45, 51, 74, 85, 90, 102, 111, 153, 170, 185, 222, 255, 306, 333, 370, 383, 510, 555, 629, 666, 765, 766, 1110, 1149, 1258, 1530, 1665, 1887, 1915, 2298, 3145, 3330, 3447, 3774, 3830, 5661, 5745, 6290, 6511, 6894, 9435, 11322, 11490, 13022, 14171, 17235, 18870, 19533, 28305, 28342, 32555, 34470, 39066, 42513, 56610, 58599, 65110, 70855, 85026, 97665, 117198, 127539, 141710, 195330, 212565, 240907, 255078, 292995, 425130, 481814, 585990, 637695, 722721, 1204535, 1275390, 1445442, 2168163, 2409070, 3613605, 4336326, 7227210, 10840815, 21681630]

約数ペア:

[(1, 21681630), (2, 10840815), (3, 7227210), (5, 4336326), (6, 3613605), (9, 2409070), (10, 2168163), (15, 1445442), (17, 1275390), (18, 1204535), (30, 722721), (34, 637695), (37, 585990), (45, 481814), (51, 425130), (74, 292995), (85, 255078), (90, 240907), (102, 212565), (111, 195330), (153, 141710), (170, 127539), (185, 117198), (222, 97665), (255, 85026), (306, 70855), (333, 65110), (370, 58599), (383, 56610), (510, 42513), (555, 39066), (629, 34470), (666, 32555), (765, 28342), (766, 28305), (1110, 19533), (1149, 18870), (1258, 17235), (1530, 14171), (1665, 13022), (1887, 11490), (1915, 11322), (2298, 9435), (3145, 6894), (3330, 6511), (3447, 6290), (3774, 5745), (3830, 5661)]