20135440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1019}}^1$

素因数の和:1064

約数の個数: 80

約数和(自身を含む): 53121600

約数和(自身を除く): 32986160

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 988, 1019, 1040, 1235, 1520, 1976, 2038, 2470, 3952, 4076, 4940, 5095, 8152, 9880, 10190, 13247, 16304, 19361, 19760, 20380, 26494, 38722, 40760, 52988, 66235, 77444, 81520, 96805, 105976, 132470, 154888, 193610, 211952, 251693, 264940, 309776, 387220, 503386, 529880, 774440, 1006772, 1059760, 1258465, 1548880, 2013544, 2516930, 4027088, 5033860, 10067720, 20135440]

約数ペア:

[(1, 20135440), (2, 10067720), (4, 5033860), (5, 4027088), (8, 2516930), (10, 2013544), (13, 1548880), (16, 1258465), (19, 1059760), (20, 1006772), (26, 774440), (38, 529880), (40, 503386), (52, 387220), (65, 309776), (76, 264940), (80, 251693), (95, 211952), (104, 193610), (130, 154888), (152, 132470), (190, 105976), (208, 96805), (247, 81520), (260, 77444), (304, 66235), (380, 52988), (494, 40760), (520, 38722), (760, 26494), (988, 20380), (1019, 19760), (1040, 19361), (1235, 16304), (1520, 13247), (1976, 10190), (2038, 9880), (2470, 8152), (3952, 5095), (4076, 4940)]