21979930

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{1447}}^1$

素因数の和:1499

約数の個数: 48

約数和(自身を含む): 47540736

約数和(自身を除く): 25560806

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 49, 62, 70, 98, 155, 217, 245, 310, 434, 490, 1085, 1447, 1519, 2170, 2894, 3038, 7235, 7595, 10129, 14470, 15190, 20258, 44857, 50645, 70903, 89714, 101290, 141806, 224285, 313999, 354515, 448570, 627998, 709030, 1569995, 2197993, 3139990, 4395986, 10989965, 21979930]

約数ペア:

[(1, 21979930), (2, 10989965), (5, 4395986), (7, 3139990), (10, 2197993), (14, 1569995), (31, 709030), (35, 627998), (49, 448570), (62, 354515), (70, 313999), (98, 224285), (155, 141806), (217, 101290), (245, 89714), (310, 70903), (434, 50645), (490, 44857), (1085, 20258), (1447, 15190), (1519, 14470), (2170, 10129), (2894, 7595), (3038, 7235)]