21000953428

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{283}}^1\times {\mathrm{203869}}^1$

素因数の和:204176

約数の個数: 48

約数和(自身を含む): 45392878720

約数和(自身を除く): 24391925292

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 283, 364, 566, 1132, 1981, 3679, 3962, 7358, 7924, 14716, 25753, 51506, 103012, 203869, 407738, 815476, 1427083, 2650297, 2854166, 5300594, 5708332, 10601188, 18552079, 37104158, 57694927, 74208316, 115389854, 230779708, 403864489, 750034051, 807728978, 1500068102, 1615457956, 3000136204, 5250238357, 10500476714, 21000953428]

約数ペア:

[(1, 21000953428), (2, 10500476714), (4, 5250238357), (7, 3000136204), (13, 1615457956), (14, 1500068102), (26, 807728978), (28, 750034051), (52, 403864489), (91, 230779708), (182, 115389854), (283, 74208316), (364, 57694927), (566, 37104158), (1132, 18552079), (1981, 10601188), (3679, 5708332), (3962, 5300594), (7358, 2854166), (7924, 2650297), (14716, 1427083), (25753, 815476), (51506, 407738), (103012, 203869)]