20677472

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{479}}^1$

素因数の和:579

約数の個数: 48

約数和(自身を含む): 43545600

約数和(自身を除く): 22868128

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 71, 76, 142, 152, 284, 304, 479, 568, 608, 958, 1136, 1349, 1916, 2272, 2698, 3832, 5396, 7664, 9101, 10792, 15328, 18202, 21584, 34009, 36404, 43168, 68018, 72808, 136036, 145616, 272072, 291232, 544144, 646171, 1088288, 1292342, 2584684, 5169368, 10338736, 20677472]

約数ペア:

[(1, 20677472), (2, 10338736), (4, 5169368), (8, 2584684), (16, 1292342), (19, 1088288), (32, 646171), (38, 544144), (71, 291232), (76, 272072), (142, 145616), (152, 136036), (284, 72808), (304, 68018), (479, 43168), (568, 36404), (608, 34009), (958, 21584), (1136, 18202), (1349, 15328), (1916, 10792), (2272, 9101), (2698, 7664), (3832, 5396)]