21044408

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{269}}^1$

素因数の和:420

約数の個数: 64

約数和(自身を含む): 49766400

約数和(自身を除く): 28721992

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 127, 154, 254, 269, 308, 508, 538, 616, 889, 1016, 1076, 1397, 1778, 1883, 2152, 2794, 2959, 3556, 3766, 5588, 5918, 7112, 7532, 9779, 11176, 11836, 15064, 19558, 20713, 23672, 34163, 39116, 41426, 68326, 78232, 82852, 136652, 165704, 239141, 273304, 375793, 478282, 751586, 956564, 1503172, 1913128, 2630551, 3006344, 5261102, 10522204, 21044408]

約数ペア:

[(1, 21044408), (2, 10522204), (4, 5261102), (7, 3006344), (8, 2630551), (11, 1913128), (14, 1503172), (22, 956564), (28, 751586), (44, 478282), (56, 375793), (77, 273304), (88, 239141), (127, 165704), (154, 136652), (254, 82852), (269, 78232), (308, 68326), (508, 41426), (538, 39116), (616, 34163), (889, 23672), (1016, 20713), (1076, 19558), (1397, 15064), (1778, 11836), (1883, 11176), (2152, 9779), (2794, 7532), (2959, 7112), (3556, 5918), (3766, 5588)]