21871304

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^2\times {\mathrm{2311}}^1$

素因数の和:2350

約数の個数: 48

約数和(自身を含む): 50771520

約数和(自身を除く): 28900216

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 169, 182, 338, 364, 676, 728, 1183, 1352, 2311, 2366, 4622, 4732, 9244, 9464, 16177, 18488, 30043, 32354, 60086, 64708, 120172, 129416, 210301, 240344, 390559, 420602, 781118, 841204, 1562236, 1682408, 2733913, 3124472, 5467826, 10935652, 21871304]

約数ペア:

[(1, 21871304), (2, 10935652), (4, 5467826), (7, 3124472), (8, 2733913), (13, 1682408), (14, 1562236), (26, 841204), (28, 781118), (52, 420602), (56, 390559), (91, 240344), (104, 210301), (169, 129416), (182, 120172), (338, 64708), (364, 60086), (676, 32354), (728, 30043), (1183, 18488), (1352, 16177), (2311, 9464), (2366, 9244), (4622, 4732)]