21986999972

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{641}}^1\times {\mathrm{29879}}^1$

素因数の和:30572

約数の個数: 48

約数和(自身を含む): 45118321920

約数和(自身を除く): 23131321948

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 574, 641, 1148, 1282, 2564, 4487, 8974, 17948, 26281, 29879, 52562, 59758, 105124, 119516, 183967, 209153, 367934, 418306, 735868, 836612, 1225039, 2450078, 4900156, 8575273, 17150546, 19152439, 34301092, 38304878, 76609756, 134067073, 268134146, 536268292, 785249999, 1570499998, 3140999996, 5496749993, 10993499986, 21986999972]

約数ペア:

[(1, 21986999972), (2, 10993499986), (4, 5496749993), (7, 3140999996), (14, 1570499998), (28, 785249999), (41, 536268292), (82, 268134146), (164, 134067073), (287, 76609756), (574, 38304878), (641, 34301092), (1148, 19152439), (1282, 17150546), (2564, 8575273), (4487, 4900156), (8974, 2450078), (17948, 1225039), (26281, 836612), (29879, 735868), (52562, 418306), (59758, 367934), (105124, 209153), (119516, 183967)]