25381020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:212

約数の個数: 144

約数和(自身を含む): 84460320

約数和(自身を除く): 59079300

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 89, 97, 98, 105, 140, 147, 178, 194, 196, 210, 245, 267, 291, 294, 356, 388, 420, 445, 485, 490, 534, 582, 588, 623, 679, 735, 890, 970, 980, 1068, 1164, 1246, 1335, 1358, 1455, 1470, 1780, 1869, 1940, 2037, 2492, 2670, 2716, 2910, 2940, 3115, 3395, 3738, 4074, 4361, 4753, 5340, 5820, 6230, 6790, 7476, 8148, 8633, 8722, 9345, 9506, 10185, 12460, 13083, 13580, 14259, 17266, 17444, 18690, 19012, 20370, 21805, 23765, 25899, 26166, 28518, 34532, 37380, 40740, 43165, 43610, 47530, 51798, 52332, 57036, 60431, 65415, 71295, 86330, 87220, 95060, 103596, 120862, 129495, 130830, 142590, 172660, 181293, 241724, 258990, 261660, 285180, 302155, 362586, 423017, 517980, 604310, 725172, 846034, 906465, 1208620, 1269051, 1692068, 1812930, 2115085, 2538102, 3625860, 4230170, 5076204, 6345255, 8460340, 12690510, 25381020]

約数ペア:

[(1, 25381020), (2, 12690510), (3, 8460340), (4, 6345255), (5, 5076204), (6, 4230170), (7, 3625860), (10, 2538102), (12, 2115085), (14, 1812930), (15, 1692068), (20, 1269051), (21, 1208620), (28, 906465), (30, 846034), (35, 725172), (42, 604310), (49, 517980), (60, 423017), (70, 362586), (84, 302155), (89, 285180), (97, 261660), (98, 258990), (105, 241724), (140, 181293), (147, 172660), (178, 142590), (194, 130830), (196, 129495), (210, 120862), (245, 103596), (267, 95060), (291, 87220), (294, 86330), (356, 71295), (388, 65415), (420, 60431), (445, 57036), (485, 52332), (490, 51798), (534, 47530), (582, 43610), (588, 43165), (623, 40740), (679, 37380), (735, 34532), (890, 28518), (970, 26166), (980, 25899), (1068, 23765), (1164, 21805), (1246, 20370), (1335, 19012), (1358, 18690), (1455, 17444), (1470, 17266), (1780, 14259), (1869, 13580), (1940, 13083), (2037, 12460), (2492, 10185), (2670, 9506), (2716, 9345), (2910, 8722), (2940, 8633), (3115, 8148), (3395, 7476), (3738, 6790), (4074, 6230), (4361, 5820), (4753, 5340)]