28678390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{7607}}^1$

素因数の和:7656

約数の個数: 32

約数和(自身を含む): 57516480

約数和(自身を除く): 28838090

約数列:

[1, 2, 5, 10, 13, 26, 29, 58, 65, 130, 145, 290, 377, 754, 1885, 3770, 7607, 15214, 38035, 76070, 98891, 197782, 220603, 441206, 494455, 988910, 1103015, 2206030, 2867839, 5735678, 14339195, 28678390]

約数ペア:

[(1, 28678390), (2, 14339195), (5, 5735678), (10, 2867839), (13, 2206030), (26, 1103015), (29, 988910), (58, 494455), (65, 441206), (130, 220603), (145, 197782), (290, 98891), (377, 76070), (754, 38035), (1885, 15214), (3770, 7607)]