21972580

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{3203}}^1$

素因数の和:3233

約数の個数: 48

約数和(自身を含む): 53827200

約数和(自身を除く): 31854620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3203, 3430, 6406, 6860, 12812, 16015, 22421, 32030, 44842, 64060, 89684, 112105, 156947, 224210, 313894, 448420, 627788, 784735, 1098629, 1569470, 2197258, 3138940, 4394516, 5493145, 10986290, 21972580]

約数ペア:

[(1, 21972580), (2, 10986290), (4, 5493145), (5, 4394516), (7, 3138940), (10, 2197258), (14, 1569470), (20, 1098629), (28, 784735), (35, 627788), (49, 448420), (70, 313894), (98, 224210), (140, 156947), (196, 112105), (245, 89684), (343, 64060), (490, 44842), (686, 32030), (980, 22421), (1372, 16015), (1715, 12812), (3203, 6860), (3430, 6406)]