19987632

素因数分解:

$2^4\times 3^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:351

約数の個数: 120

約数和(自身を含む): 64995840

約数和(自身を除く): 45008208

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 36, 42, 48, 56, 63, 72, 79, 84, 112, 126, 144, 158, 168, 237, 251, 252, 316, 336, 474, 502, 504, 553, 632, 711, 753, 948, 1004, 1008, 1106, 1264, 1422, 1506, 1659, 1757, 1896, 2008, 2212, 2259, 2844, 3012, 3318, 3514, 3792, 4016, 4424, 4518, 4977, 5271, 5688, 6024, 6636, 7028, 8848, 9036, 9954, 10542, 11376, 12048, 13272, 14056, 15813, 18072, 19829, 19908, 21084, 26544, 28112, 31626, 36144, 39658, 39816, 42168, 59487, 63252, 79316, 79632, 84336, 118974, 126504, 138803, 158632, 178461, 237948, 253008, 277606, 317264, 356922, 416409, 475896, 555212, 713844, 832818, 951792, 1110424, 1249227, 1427688, 1665636, 2220848, 2498454, 2855376, 3331272, 4996908, 6662544, 9993816, 19987632]

約数ペア:

[(1, 19987632), (2, 9993816), (3, 6662544), (4, 4996908), (6, 3331272), (7, 2855376), (8, 2498454), (9, 2220848), (12, 1665636), (14, 1427688), (16, 1249227), (18, 1110424), (21, 951792), (24, 832818), (28, 713844), (36, 555212), (42, 475896), (48, 416409), (56, 356922), (63, 317264), (72, 277606), (79, 253008), (84, 237948), (112, 178461), (126, 158632), (144, 138803), (158, 126504), (168, 118974), (237, 84336), (251, 79632), (252, 79316), (316, 63252), (336, 59487), (474, 42168), (502, 39816), (504, 39658), (553, 36144), (632, 31626), (711, 28112), (753, 26544), (948, 21084), (1004, 19908), (1008, 19829), (1106, 18072), (1264, 15813), (1422, 14056), (1506, 13272), (1659, 12048), (1757, 11376), (1896, 10542), (2008, 9954), (2212, 9036), (2259, 8848), (2844, 7028), (3012, 6636), (3318, 6024), (3514, 5688), (3792, 5271), (4016, 4977), (4424, 4518)]