20839552

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:249

約数の個数: 64

約数和(自身を含む): 44963640

約数和(自身を除く): 24124088

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 61, 64, 68, 122, 128, 136, 157, 244, 272, 314, 488, 544, 628, 976, 1037, 1088, 1256, 1952, 2074, 2176, 2512, 2669, 3904, 4148, 5024, 5338, 7808, 8296, 9577, 10048, 10676, 16592, 19154, 20096, 21352, 33184, 38308, 42704, 66368, 76616, 85408, 132736, 153232, 162809, 170816, 306464, 325618, 341632, 612928, 651236, 1225856, 1302472, 2604944, 5209888, 10419776, 20839552]

約数ペア:

[(1, 20839552), (2, 10419776), (4, 5209888), (8, 2604944), (16, 1302472), (17, 1225856), (32, 651236), (34, 612928), (61, 341632), (64, 325618), (68, 306464), (122, 170816), (128, 162809), (136, 153232), (157, 132736), (244, 85408), (272, 76616), (314, 66368), (488, 42704), (544, 38308), (628, 33184), (976, 21352), (1037, 20096), (1088, 19154), (1256, 16592), (1952, 10676), (2074, 10048), (2176, 9577), (2512, 8296), (2669, 7808), (3904, 5338), (4148, 5024)]