28287760

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:268

約数の個数: 80

約数和(自身を含む): 69303600

約数和(自身を除く): 41015840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 89, 116, 137, 145, 178, 232, 274, 290, 356, 445, 464, 548, 580, 685, 712, 890, 1096, 1160, 1370, 1424, 1780, 2192, 2320, 2581, 2740, 3560, 3973, 5162, 5480, 7120, 7946, 10324, 10960, 12193, 12905, 15892, 19865, 20648, 24386, 25810, 31784, 39730, 41296, 48772, 51620, 60965, 63568, 79460, 97544, 103240, 121930, 158920, 195088, 206480, 243860, 317840, 353597, 487720, 707194, 975440, 1414388, 1767985, 2828776, 3535970, 5657552, 7071940, 14143880, 28287760]

約数ペア:

[(1, 28287760), (2, 14143880), (4, 7071940), (5, 5657552), (8, 3535970), (10, 2828776), (16, 1767985), (20, 1414388), (29, 975440), (40, 707194), (58, 487720), (80, 353597), (89, 317840), (116, 243860), (137, 206480), (145, 195088), (178, 158920), (232, 121930), (274, 103240), (290, 97544), (356, 79460), (445, 63568), (464, 60965), (548, 51620), (580, 48772), (685, 41296), (712, 39730), (890, 31784), (1096, 25810), (1160, 24386), (1370, 20648), (1424, 19865), (1780, 15892), (2192, 12905), (2320, 12193), (2581, 10960), (2740, 10324), (3560, 7946), (3973, 7120), (5162, 5480)]