20569700

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{173}}^1$

素因数の和:257

約数の個数: 72

約数和(自身を含む): 47575080

約数和(自身を除く): 27005380

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 41, 50, 58, 82, 100, 116, 145, 164, 173, 205, 290, 346, 410, 580, 692, 725, 820, 865, 1025, 1189, 1450, 1730, 2050, 2378, 2900, 3460, 4100, 4325, 4756, 5017, 5945, 7093, 8650, 10034, 11890, 14186, 17300, 20068, 23780, 25085, 28372, 29725, 35465, 50170, 59450, 70930, 100340, 118900, 125425, 141860, 177325, 205697, 250850, 354650, 411394, 501700, 709300, 822788, 1028485, 2056970, 4113940, 5142425, 10284850, 20569700]

約数ペア:

[(1, 20569700), (2, 10284850), (4, 5142425), (5, 4113940), (10, 2056970), (20, 1028485), (25, 822788), (29, 709300), (41, 501700), (50, 411394), (58, 354650), (82, 250850), (100, 205697), (116, 177325), (145, 141860), (164, 125425), (173, 118900), (205, 100340), (290, 70930), (346, 59450), (410, 50170), (580, 35465), (692, 29725), (725, 28372), (820, 25085), (865, 23780), (1025, 20068), (1189, 17300), (1450, 14186), (1730, 11890), (2050, 10034), (2378, 8650), (2900, 7093), (3460, 5945), (4100, 5017), (4325, 4756)]