21887516

素因数分解:

$2^2\times 7^4\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:128

約数の個数: 60

約数和(自身を含む): 46586232

約数和(自身を除く): 24698716

約数列:

[1, 2, 4, 7, 14, 28, 43, 49, 53, 86, 98, 106, 172, 196, 212, 301, 343, 371, 602, 686, 742, 1204, 1372, 1484, 2107, 2279, 2401, 2597, 4214, 4558, 4802, 5194, 8428, 9116, 9604, 10388, 14749, 15953, 18179, 29498, 31906, 36358, 58996, 63812, 72716, 103243, 111671, 127253, 206486, 223342, 254506, 412972, 446684, 509012, 781697, 1563394, 3126788, 5471879, 10943758, 21887516]

約数ペア:

[(1, 21887516), (2, 10943758), (4, 5471879), (7, 3126788), (14, 1563394), (28, 781697), (43, 509012), (49, 446684), (53, 412972), (86, 254506), (98, 223342), (106, 206486), (172, 127253), (196, 111671), (212, 103243), (301, 72716), (343, 63812), (371, 58996), (602, 36358), (686, 31906), (742, 29498), (1204, 18179), (1372, 15953), (1484, 14749), (2107, 10388), (2279, 9604), (2401, 9116), (2597, 8428), (4214, 5194), (4558, 4802)]