20407300

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{227}}^1$

素因数の和:301

約数の個数: 72

約数和(自身を含む): 47496960

約数和(自身を除く): 27089660

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 31, 50, 58, 62, 100, 116, 124, 145, 155, 227, 290, 310, 454, 580, 620, 725, 775, 899, 908, 1135, 1450, 1550, 1798, 2270, 2900, 3100, 3596, 4495, 4540, 5675, 6583, 7037, 8990, 11350, 13166, 14074, 17980, 22475, 22700, 26332, 28148, 32915, 35185, 44950, 65830, 70370, 89900, 131660, 140740, 164575, 175925, 204073, 329150, 351850, 408146, 658300, 703700, 816292, 1020365, 2040730, 4081460, 5101825, 10203650, 20407300]

約数ペア:

[(1, 20407300), (2, 10203650), (4, 5101825), (5, 4081460), (10, 2040730), (20, 1020365), (25, 816292), (29, 703700), (31, 658300), (50, 408146), (58, 351850), (62, 329150), (100, 204073), (116, 175925), (124, 164575), (145, 140740), (155, 131660), (227, 89900), (290, 70370), (310, 65830), (454, 44950), (580, 35185), (620, 32915), (725, 28148), (775, 26332), (899, 22700), (908, 22475), (1135, 17980), (1450, 14074), (1550, 13166), (1798, 11350), (2270, 8990), (2900, 7037), (3100, 6583), (3596, 5675), (4495, 4540)]