19847936

素因数分解:

$2^8\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:149

約数の個数: 72

約数和(自身を含む): 42580608

約数和(自身を除く): 22732672

約数列:

[1, 2, 4, 8, 16, 31, 32, 41, 61, 62, 64, 82, 122, 124, 128, 164, 244, 248, 256, 328, 488, 496, 656, 976, 992, 1271, 1312, 1891, 1952, 1984, 2501, 2542, 2624, 3782, 3904, 3968, 5002, 5084, 5248, 7564, 7808, 7936, 10004, 10168, 10496, 15128, 15616, 20008, 20336, 30256, 40016, 40672, 60512, 77531, 80032, 81344, 121024, 155062, 160064, 162688, 242048, 310124, 320128, 325376, 484096, 620248, 640256, 1240496, 2480992, 4961984, 9923968, 19847936]

約数ペア:

[(1, 19847936), (2, 9923968), (4, 4961984), (8, 2480992), (16, 1240496), (31, 640256), (32, 620248), (41, 484096), (61, 325376), (62, 320128), (64, 310124), (82, 242048), (122, 162688), (124, 160064), (128, 155062), (164, 121024), (244, 81344), (248, 80032), (256, 77531), (328, 60512), (488, 40672), (496, 40016), (656, 30256), (976, 20336), (992, 20008), (1271, 15616), (1312, 15128), (1891, 10496), (1952, 10168), (1984, 10004), (2501, 7936), (2542, 7808), (2624, 7564), (3782, 5248), (3904, 5084), (3968, 5002)]