21002624

素因数分解:

$2^7\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:191

約数の個数: 64

約数和(自身を含む): 44390400

約数和(自身を除く): 23387776

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 67, 79, 124, 128, 134, 158, 248, 268, 316, 496, 536, 632, 992, 1072, 1264, 1984, 2077, 2144, 2449, 2528, 3968, 4154, 4288, 4898, 5056, 5293, 8308, 8576, 9796, 10112, 10586, 16616, 19592, 21172, 33232, 39184, 42344, 66464, 78368, 84688, 132928, 156736, 164083, 169376, 265856, 313472, 328166, 338752, 656332, 677504, 1312664, 2625328, 5250656, 10501312, 21002624]

約数ペア:

[(1, 21002624), (2, 10501312), (4, 5250656), (8, 2625328), (16, 1312664), (31, 677504), (32, 656332), (62, 338752), (64, 328166), (67, 313472), (79, 265856), (124, 169376), (128, 164083), (134, 156736), (158, 132928), (248, 84688), (268, 78368), (316, 66464), (496, 42344), (536, 39184), (632, 33232), (992, 21172), (1072, 19592), (1264, 16616), (1984, 10586), (2077, 10112), (2144, 9796), (2449, 8576), (2528, 8308), (3968, 5293), (4154, 5056), (4288, 4898)]