21987000003

素因数分解:

$3^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{433}}^1\times {\mathrm{4703}}^1$

素因数の和:5259

約数の個数: 32

約数和(自身を含む): 30378055680

約数和(自身を除く): 8391055677

約数列:

[1, 3, 59, 61, 177, 183, 433, 1299, 3599, 4703, 10797, 14109, 25547, 26413, 76641, 79239, 277477, 286883, 832431, 860649, 1558367, 2036399, 4675101, 6109197, 16926097, 50778291, 120147541, 124220339, 360442623, 372661017, 7329000001, 21987000003]

約数ペア:

[(1, 21987000003), (3, 7329000001), (59, 372661017), (61, 360442623), (177, 124220339), (183, 120147541), (433, 50778291), (1299, 16926097), (3599, 6109197), (4703, 4675101), (10797, 2036399), (14109, 1558367), (25547, 860649), (26413, 832431), (76641, 286883), (79239, 277477)]