21884980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2053}}^1$

素因数の和:2116

約数の個数: 48

約数和(自身を含む): 50725584

約数和(自身を除く): 28840604

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 52, 65, 82, 130, 164, 205, 260, 410, 533, 820, 1066, 2053, 2132, 2665, 4106, 5330, 8212, 10265, 10660, 20530, 26689, 41060, 53378, 84173, 106756, 133445, 168346, 266890, 336692, 420865, 533780, 841730, 1094249, 1683460, 2188498, 4376996, 5471245, 10942490, 21884980]

約数ペア:

[(1, 21884980), (2, 10942490), (4, 5471245), (5, 4376996), (10, 2188498), (13, 1683460), (20, 1094249), (26, 841730), (41, 533780), (52, 420865), (65, 336692), (82, 266890), (130, 168346), (164, 133445), (205, 106756), (260, 84173), (410, 53378), (533, 41060), (820, 26689), (1066, 20530), (2053, 10660), (2132, 10265), (2665, 8212), (4106, 5330)]