21458864

素因数分解:

$2^4\times 7^2\times {\mathrm{101}}^1\times {\mathrm{271}}^1$

素因数の和:394

約数の個数: 60

約数和(自身を含む): 49023648

約数和(自身を除く): 27564784

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 101, 112, 196, 202, 271, 392, 404, 542, 707, 784, 808, 1084, 1414, 1616, 1897, 2168, 2828, 3794, 4336, 4949, 5656, 7588, 9898, 11312, 13279, 15176, 19796, 26558, 27371, 30352, 39592, 53116, 54742, 79184, 106232, 109484, 191597, 212464, 218968, 383194, 437936, 766388, 1341179, 1532776, 2682358, 3065552, 5364716, 10729432, 21458864]

約数ペア:

[(1, 21458864), (2, 10729432), (4, 5364716), (7, 3065552), (8, 2682358), (14, 1532776), (16, 1341179), (28, 766388), (49, 437936), (56, 383194), (98, 218968), (101, 212464), (112, 191597), (196, 109484), (202, 106232), (271, 79184), (392, 54742), (404, 53116), (542, 39592), (707, 30352), (784, 27371), (808, 26558), (1084, 19796), (1414, 15176), (1616, 13279), (1897, 11312), (2168, 9898), (2828, 7588), (3794, 5656), (4336, 4949)]