28130020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{769}}^1$

素因数の和:868

約数の個数: 48

約数和(自身を含む): 62092800

約数和(自身を除く): 33962780

約数列:

[1, 2, 4, 5, 10, 20, 31, 59, 62, 118, 124, 155, 236, 295, 310, 590, 620, 769, 1180, 1538, 1829, 3076, 3658, 3845, 7316, 7690, 9145, 15380, 18290, 23839, 36580, 45371, 47678, 90742, 95356, 119195, 181484, 226855, 238390, 453710, 476780, 907420, 1406501, 2813002, 5626004, 7032505, 14065010, 28130020]

約数ペア:

[(1, 28130020), (2, 14065010), (4, 7032505), (5, 5626004), (10, 2813002), (20, 1406501), (31, 907420), (59, 476780), (62, 453710), (118, 238390), (124, 226855), (155, 181484), (236, 119195), (295, 95356), (310, 90742), (590, 47678), (620, 45371), (769, 36580), (1180, 23839), (1538, 18290), (1829, 15380), (3076, 9145), (3658, 7690), (3845, 7316)]