21291228

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{28163}}^1$

素因数の和:28183

約数の個数: 48

約数和(自身を含む): 63087360

約数和(自身を除く): 41796132

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 189, 252, 378, 756, 28163, 56326, 84489, 112652, 168978, 197141, 253467, 337956, 394282, 506934, 591423, 760401, 788564, 1013868, 1182846, 1520802, 1774269, 2365692, 3041604, 3548538, 5322807, 7097076, 10645614, 21291228]

約数ペア:

[(1, 21291228), (2, 10645614), (3, 7097076), (4, 5322807), (6, 3548538), (7, 3041604), (9, 2365692), (12, 1774269), (14, 1520802), (18, 1182846), (21, 1013868), (27, 788564), (28, 760401), (36, 591423), (42, 506934), (54, 394282), (63, 337956), (84, 253467), (108, 197141), (126, 168978), (189, 112652), (252, 84489), (378, 56326), (756, 28163)]