21508128

素因数分解:

$2^5\times 3^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1$

素因数の和:247

約数の個数: 144

約数和(自身を含む): 67931136

約数和(自身を除く): 46423008

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 17, 18, 23, 24, 32, 34, 36, 46, 48, 51, 68, 69, 72, 92, 96, 102, 136, 138, 144, 153, 184, 191, 204, 207, 272, 276, 288, 306, 368, 382, 391, 408, 414, 544, 552, 573, 612, 736, 764, 782, 816, 828, 1104, 1146, 1173, 1224, 1528, 1564, 1632, 1656, 1719, 2208, 2292, 2346, 2448, 3056, 3128, 3247, 3312, 3438, 3519, 4393, 4584, 4692, 4896, 6112, 6256, 6494, 6624, 6876, 7038, 8786, 9168, 9384, 9741, 12512, 12988, 13179, 13752, 14076, 17572, 18336, 18768, 19482, 25976, 26358, 27504, 28152, 29223, 35144, 37536, 38964, 39537, 51952, 52716, 55008, 56304, 58446, 70288, 74681, 77928, 79074, 103904, 105432, 112608, 116892, 140576, 149362, 155856, 158148, 210864, 224043, 233784, 298724, 311712, 316296, 421728, 448086, 467568, 597448, 632592, 672129, 896172, 935136, 1194896, 1265184, 1344258, 1792344, 2389792, 2688516, 3584688, 5377032, 7169376, 10754064, 21508128]

約数ペア:

[(1, 21508128), (2, 10754064), (3, 7169376), (4, 5377032), (6, 3584688), (8, 2688516), (9, 2389792), (12, 1792344), (16, 1344258), (17, 1265184), (18, 1194896), (23, 935136), (24, 896172), (32, 672129), (34, 632592), (36, 597448), (46, 467568), (48, 448086), (51, 421728), (68, 316296), (69, 311712), (72, 298724), (92, 233784), (96, 224043), (102, 210864), (136, 158148), (138, 155856), (144, 149362), (153, 140576), (184, 116892), (191, 112608), (204, 105432), (207, 103904), (272, 79074), (276, 77928), (288, 74681), (306, 70288), (368, 58446), (382, 56304), (391, 55008), (408, 52716), (414, 51952), (544, 39537), (552, 38964), (573, 37536), (612, 35144), (736, 29223), (764, 28152), (782, 27504), (816, 26358), (828, 25976), (1104, 19482), (1146, 18768), (1173, 18336), (1224, 17572), (1528, 14076), (1564, 13752), (1632, 13179), (1656, 12988), (1719, 12512), (2208, 9741), (2292, 9384), (2346, 9168), (2448, 8786), (3056, 7038), (3128, 6876), (3247, 6624), (3312, 6494), (3438, 6256), (3519, 6112), (4393, 4896), (4584, 4692)]