21794220

素因数分解:

$2^2\times 3^2\times 5^1\times 7^3\times {\mathrm{353}}^1$

素因数の和:389

約数の個数: 144

約数和(自身を含む): 77313600

約数和(自身を除く): 55519380

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 343, 353, 420, 441, 490, 588, 630, 686, 706, 735, 882, 980, 1029, 1059, 1260, 1372, 1412, 1470, 1715, 1764, 1765, 2058, 2118, 2205, 2471, 2940, 3087, 3177, 3430, 3530, 4116, 4236, 4410, 4942, 5145, 5295, 6174, 6354, 6860, 7060, 7413, 8820, 9884, 10290, 10590, 12348, 12355, 12708, 14826, 15435, 15885, 17297, 20580, 21180, 22239, 24710, 29652, 30870, 31770, 34594, 37065, 44478, 49420, 51891, 61740, 63540, 69188, 74130, 86485, 88956, 103782, 111195, 121079, 148260, 155673, 172970, 207564, 222390, 242158, 259455, 311346, 345940, 363237, 444780, 484316, 518910, 605395, 622692, 726474, 778365, 1037820, 1089711, 1210790, 1452948, 1556730, 1816185, 2179422, 2421580, 3113460, 3632370, 4358844, 5448555, 7264740, 10897110, 21794220]

約数ペア:

[(1, 21794220), (2, 10897110), (3, 7264740), (4, 5448555), (5, 4358844), (6, 3632370), (7, 3113460), (9, 2421580), (10, 2179422), (12, 1816185), (14, 1556730), (15, 1452948), (18, 1210790), (20, 1089711), (21, 1037820), (28, 778365), (30, 726474), (35, 622692), (36, 605395), (42, 518910), (45, 484316), (49, 444780), (60, 363237), (63, 345940), (70, 311346), (84, 259455), (90, 242158), (98, 222390), (105, 207564), (126, 172970), (140, 155673), (147, 148260), (180, 121079), (196, 111195), (210, 103782), (245, 88956), (252, 86485), (294, 74130), (315, 69188), (343, 63540), (353, 61740), (420, 51891), (441, 49420), (490, 44478), (588, 37065), (630, 34594), (686, 31770), (706, 30870), (735, 29652), (882, 24710), (980, 22239), (1029, 21180), (1059, 20580), (1260, 17297), (1372, 15885), (1412, 15435), (1470, 14826), (1715, 12708), (1764, 12355), (1765, 12348), (2058, 10590), (2118, 10290), (2205, 9884), (2471, 8820), (2940, 7413), (3087, 7060), (3177, 6860), (3430, 6354), (3530, 6174), (4116, 5295), (4236, 5145), (4410, 4942)]