21368380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1$

素因数の和:187

約数の個数: 96

約数和(自身を含む): 52835328

約数和(自身を除く): 31466948

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 41, 44, 46, 55, 82, 92, 103, 110, 115, 164, 205, 206, 220, 230, 253, 410, 412, 451, 460, 506, 515, 820, 902, 943, 1012, 1030, 1133, 1265, 1804, 1886, 2060, 2255, 2266, 2369, 2530, 3772, 4223, 4510, 4532, 4715, 4738, 5060, 5665, 8446, 9020, 9430, 9476, 10373, 11330, 11845, 16892, 18860, 20746, 21115, 22660, 23690, 26059, 41492, 42230, 46453, 47380, 51865, 52118, 84460, 92906, 97129, 103730, 104236, 130295, 185812, 194258, 207460, 232265, 260590, 388516, 464530, 485645, 521180, 929060, 971290, 1068419, 1942580, 2136838, 4273676, 5342095, 10684190, 21368380]

約数ペア:

[(1, 21368380), (2, 10684190), (4, 5342095), (5, 4273676), (10, 2136838), (11, 1942580), (20, 1068419), (22, 971290), (23, 929060), (41, 521180), (44, 485645), (46, 464530), (55, 388516), (82, 260590), (92, 232265), (103, 207460), (110, 194258), (115, 185812), (164, 130295), (205, 104236), (206, 103730), (220, 97129), (230, 92906), (253, 84460), (410, 52118), (412, 51865), (451, 47380), (460, 46453), (506, 42230), (515, 41492), (820, 26059), (902, 23690), (943, 22660), (1012, 21115), (1030, 20746), (1133, 18860), (1265, 16892), (1804, 11845), (1886, 11330), (2060, 10373), (2255, 9476), (2266, 9430), (2369, 9020), (2530, 8446), (3772, 5665), (4223, 5060), (4510, 4738), (4532, 4715)]