400394752

素因数分解:

$2^9\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{521}}^1$

素因数の和:637

約数の個数: 80

約数和(自身を含む): 854409600

約数和(自身を除く): 454014848

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 79, 128, 152, 158, 256, 304, 316, 512, 521, 608, 632, 1042, 1216, 1264, 1501, 2084, 2432, 2528, 3002, 4168, 4864, 5056, 6004, 8336, 9728, 9899, 10112, 12008, 16672, 19798, 20224, 24016, 33344, 39596, 40448, 41159, 48032, 66688, 79192, 82318, 96064, 133376, 158384, 164636, 192128, 266752, 316768, 329272, 384256, 633536, 658544, 768512, 782021, 1267072, 1317088, 1564042, 2534144, 2634176, 3128084, 5068288, 5268352, 6256168, 10536704, 12512336, 21073408, 25024672, 50049344, 100098688, 200197376, 400394752]

約数ペア:

[(1, 400394752), (2, 200197376), (4, 100098688), (8, 50049344), (16, 25024672), (19, 21073408), (32, 12512336), (38, 10536704), (64, 6256168), (76, 5268352), (79, 5068288), (128, 3128084), (152, 2634176), (158, 2534144), (256, 1564042), (304, 1317088), (316, 1267072), (512, 782021), (521, 768512), (608, 658544), (632, 633536), (1042, 384256), (1216, 329272), (1264, 316768), (1501, 266752), (2084, 192128), (2432, 164636), (2528, 158384), (3002, 133376), (4168, 96064), (4864, 82318), (5056, 79192), (6004, 66688), (8336, 48032), (9728, 41159), (9899, 40448), (10112, 39596), (12008, 33344), (16672, 24016), (19798, 20224)]