19981110

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{383}}^1$

素因数の和:477

約数の個数: 64

約数和(自身を含む): 50429952

約数和(自身を除く): 30448842

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 37, 47, 74, 94, 111, 141, 185, 222, 235, 282, 370, 383, 470, 555, 705, 766, 1110, 1149, 1410, 1739, 1915, 2298, 3478, 3830, 5217, 5745, 8695, 10434, 11490, 14171, 17390, 18001, 26085, 28342, 36002, 42513, 52170, 54003, 70855, 85026, 90005, 108006, 141710, 180010, 212565, 270015, 425130, 540030, 666037, 1332074, 1998111, 3330185, 3996222, 6660370, 9990555, 19981110]

約数ペア:

[(1, 19981110), (2, 9990555), (3, 6660370), (5, 3996222), (6, 3330185), (10, 1998111), (15, 1332074), (30, 666037), (37, 540030), (47, 425130), (74, 270015), (94, 212565), (111, 180010), (141, 141710), (185, 108006), (222, 90005), (235, 85026), (282, 70855), (370, 54003), (383, 52170), (470, 42513), (555, 36002), (705, 28342), (766, 26085), (1110, 18001), (1149, 17390), (1410, 14171), (1739, 11490), (1915, 10434), (2298, 8695), (3478, 5745), (3830, 5217)]