28197520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1427}}^1$

素因数の和:1472

約数の個数: 80

約数和(自身を含む): 74370240

約数和(自身を除く): 46172720

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, 1040, 1235, 1427, 1520, 1976, 2470, 2854, 3952, 4940, 5708, 7135, 9880, 11416, 14270, 18551, 19760, 22832, 27113, 28540, 37102, 54226, 57080, 74204, 92755, 108452, 114160, 135565, 148408, 185510, 216904, 271130, 296816, 352469, 371020, 433808, 542260, 704938, 742040, 1084520, 1409876, 1484080, 1762345, 2169040, 2819752, 3524690, 5639504, 7049380, 14098760, 28197520]

約数ペア:

[(1, 28197520), (2, 14098760), (4, 7049380), (5, 5639504), (8, 3524690), (10, 2819752), (13, 2169040), (16, 1762345), (19, 1484080), (20, 1409876), (26, 1084520), (38, 742040), (40, 704938), (52, 542260), (65, 433808), (76, 371020), (80, 352469), (95, 296816), (104, 271130), (130, 216904), (152, 185510), (190, 148408), (208, 135565), (247, 114160), (260, 108452), (304, 92755), (380, 74204), (494, 57080), (520, 54226), (760, 37102), (988, 28540), (1040, 27113), (1235, 22832), (1427, 19760), (1520, 18551), (1976, 14270), (2470, 11416), (2854, 9880), (3952, 7135), (4940, 5708)]