21453736

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:242

約数の個数: 64

約数和(自身を含む): 45504000

約数和(自身を除く): 24050264

約数列:

[1, 2, 4, 8, 19, 29, 31, 38, 58, 62, 76, 116, 124, 152, 157, 232, 248, 314, 551, 589, 628, 899, 1102, 1178, 1256, 1798, 2204, 2356, 2983, 3596, 4408, 4553, 4712, 4867, 5966, 7192, 9106, 9734, 11932, 17081, 18212, 19468, 23864, 34162, 36424, 38936, 68324, 86507, 92473, 136648, 141143, 173014, 184946, 282286, 346028, 369892, 564572, 692056, 739784, 1129144, 2681717, 5363434, 10726868, 21453736]

約数ペア:

[(1, 21453736), (2, 10726868), (4, 5363434), (8, 2681717), (19, 1129144), (29, 739784), (31, 692056), (38, 564572), (58, 369892), (62, 346028), (76, 282286), (116, 184946), (124, 173014), (152, 141143), (157, 136648), (232, 92473), (248, 86507), (314, 68324), (551, 38936), (589, 36424), (628, 34162), (899, 23864), (1102, 19468), (1178, 18212), (1256, 17081), (1798, 11932), (2204, 9734), (2356, 9106), (2983, 7192), (3596, 5966), (4408, 4867), (4553, 4712)]