25041520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{461}}^1$

素因数の和:578

約数の個数: 80

約数和(自身を含む): 67370688

約数和(自身を除く): 42329168

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 97, 112, 140, 194, 280, 388, 461, 485, 560, 679, 776, 922, 970, 1358, 1552, 1844, 1940, 2305, 2716, 3227, 3395, 3688, 3880, 4610, 5432, 6454, 6790, 7376, 7760, 9220, 10864, 12908, 13580, 16135, 18440, 25816, 27160, 32270, 36880, 44717, 51632, 54320, 64540, 89434, 129080, 178868, 223585, 258160, 313019, 357736, 447170, 626038, 715472, 894340, 1252076, 1565095, 1788680, 2504152, 3130190, 3577360, 5008304, 6260380, 12520760, 25041520]

約数ペア:

[(1, 25041520), (2, 12520760), (4, 6260380), (5, 5008304), (7, 3577360), (8, 3130190), (10, 2504152), (14, 1788680), (16, 1565095), (20, 1252076), (28, 894340), (35, 715472), (40, 626038), (56, 447170), (70, 357736), (80, 313019), (97, 258160), (112, 223585), (140, 178868), (194, 129080), (280, 89434), (388, 64540), (461, 54320), (485, 51632), (560, 44717), (679, 36880), (776, 32270), (922, 27160), (970, 25816), (1358, 18440), (1552, 16135), (1844, 13580), (1940, 12908), (2305, 10864), (2716, 9220), (3227, 7760), (3395, 7376), (3688, 6790), (3880, 6454), (4610, 5432)]