21807136

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:162

約数の個数: 96

約数和(自身を含む): 50803200

約数和(自身を除く): 28996064

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 31, 32, 38, 52, 62, 76, 89, 104, 124, 152, 178, 208, 247, 248, 304, 356, 403, 416, 494, 496, 589, 608, 712, 806, 988, 992, 1157, 1178, 1424, 1612, 1691, 1976, 2314, 2356, 2759, 2848, 3224, 3382, 3952, 4628, 4712, 5518, 6448, 6764, 7657, 7904, 9256, 9424, 11036, 12896, 13528, 15314, 18512, 18848, 21983, 22072, 27056, 30628, 35867, 37024, 43966, 44144, 52421, 54112, 61256, 71734, 87932, 88288, 104842, 122512, 143468, 175864, 209684, 245024, 286936, 351728, 419368, 573872, 681473, 703456, 838736, 1147744, 1362946, 1677472, 2725892, 5451784, 10903568, 21807136]

約数ペア:

[(1, 21807136), (2, 10903568), (4, 5451784), (8, 2725892), (13, 1677472), (16, 1362946), (19, 1147744), (26, 838736), (31, 703456), (32, 681473), (38, 573872), (52, 419368), (62, 351728), (76, 286936), (89, 245024), (104, 209684), (124, 175864), (152, 143468), (178, 122512), (208, 104842), (247, 88288), (248, 87932), (304, 71734), (356, 61256), (403, 54112), (416, 52421), (494, 44144), (496, 43966), (589, 37024), (608, 35867), (712, 30628), (806, 27056), (988, 22072), (992, 21983), (1157, 18848), (1178, 18512), (1424, 15314), (1612, 13528), (1691, 12896), (1976, 11036), (2314, 9424), (2356, 9256), (2759, 7904), (2848, 7657), (3224, 6764), (3382, 6448), (3952, 5518), (4628, 4712)]