20455552

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{647}}^1$

素因数の和:693

約数の個数: 64

約数和(自身を含む): 46267200

約数和(自身を除く): 25811648

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 64, 76, 104, 128, 152, 208, 247, 304, 416, 494, 608, 647, 832, 988, 1216, 1294, 1664, 1976, 2432, 2588, 3952, 5176, 7904, 8411, 10352, 12293, 15808, 16822, 20704, 24586, 31616, 33644, 41408, 49172, 67288, 82816, 98344, 134576, 159809, 196688, 269152, 319618, 393376, 538304, 639236, 786752, 1076608, 1278472, 1573504, 2556944, 5113888, 10227776, 20455552]

約数ペア:

[(1, 20455552), (2, 10227776), (4, 5113888), (8, 2556944), (13, 1573504), (16, 1278472), (19, 1076608), (26, 786752), (32, 639236), (38, 538304), (52, 393376), (64, 319618), (76, 269152), (104, 196688), (128, 159809), (152, 134576), (208, 98344), (247, 82816), (304, 67288), (416, 49172), (494, 41408), (608, 33644), (647, 31616), (832, 24586), (988, 20704), (1216, 16822), (1294, 15808), (1664, 12293), (1976, 10352), (2432, 8411), (2588, 7904), (3952, 5176)]