21175770

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1$

素因数の和:220

約数の個数: 128

約数和(自身を含む): 64696320

約数和(自身を除く): 43520550

約数列:

[1, 2, 3, 5, 6, 7, 10, 11, 14, 15, 21, 22, 30, 33, 35, 42, 55, 66, 70, 77, 89, 103, 105, 110, 154, 165, 178, 206, 210, 231, 267, 309, 330, 385, 445, 462, 515, 534, 618, 623, 721, 770, 890, 979, 1030, 1133, 1155, 1246, 1335, 1442, 1545, 1869, 1958, 2163, 2266, 2310, 2670, 2937, 3090, 3115, 3399, 3605, 3738, 4326, 4895, 5665, 5874, 6230, 6798, 6853, 7210, 7931, 9167, 9345, 9790, 10815, 11330, 13706, 14685, 15862, 16995, 18334, 18690, 20559, 21630, 23793, 27501, 29370, 33990, 34265, 39655, 41118, 45835, 47586, 55002, 64169, 68530, 79310, 91670, 100837, 102795, 118965, 128338, 137505, 192507, 201674, 205590, 237930, 275010, 302511, 320845, 385014, 504185, 605022, 641690, 705859, 962535, 1008370, 1411718, 1512555, 1925070, 2117577, 3025110, 3529295, 4235154, 7058590, 10587885, 21175770]

約数ペア:

[(1, 21175770), (2, 10587885), (3, 7058590), (5, 4235154), (6, 3529295), (7, 3025110), (10, 2117577), (11, 1925070), (14, 1512555), (15, 1411718), (21, 1008370), (22, 962535), (30, 705859), (33, 641690), (35, 605022), (42, 504185), (55, 385014), (66, 320845), (70, 302511), (77, 275010), (89, 237930), (103, 205590), (105, 201674), (110, 192507), (154, 137505), (165, 128338), (178, 118965), (206, 102795), (210, 100837), (231, 91670), (267, 79310), (309, 68530), (330, 64169), (385, 55002), (445, 47586), (462, 45835), (515, 41118), (534, 39655), (618, 34265), (623, 33990), (721, 29370), (770, 27501), (890, 23793), (979, 21630), (1030, 20559), (1133, 18690), (1155, 18334), (1246, 16995), (1335, 15862), (1442, 14685), (1545, 13706), (1869, 11330), (1958, 10815), (2163, 9790), (2266, 9345), (2310, 9167), (2670, 7931), (2937, 7210), (3090, 6853), (3115, 6798), (3399, 6230), (3605, 5874), (3738, 5665), (4326, 4895)]