20175872

素因数分解:

$2^{10}\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:117

約数の個数: 88

約数和(自身を含む): 45689040

約数和(自身を除く): 25513168

約数列:

[1, 2, 4, 8, 16, 17, 19, 32, 34, 38, 61, 64, 68, 76, 122, 128, 136, 152, 244, 256, 272, 304, 323, 488, 512, 544, 608, 646, 976, 1024, 1037, 1088, 1159, 1216, 1292, 1952, 2074, 2176, 2318, 2432, 2584, 3904, 4148, 4352, 4636, 4864, 5168, 7808, 8296, 8704, 9272, 9728, 10336, 15616, 16592, 17408, 18544, 19456, 19703, 20672, 31232, 33184, 37088, 39406, 41344, 62464, 66368, 74176, 78812, 82688, 132736, 148352, 157624, 165376, 265472, 296704, 315248, 330752, 530944, 593408, 630496, 1061888, 1186816, 1260992, 2521984, 5043968, 10087936, 20175872]

約数ペア:

[(1, 20175872), (2, 10087936), (4, 5043968), (8, 2521984), (16, 1260992), (17, 1186816), (19, 1061888), (32, 630496), (34, 593408), (38, 530944), (61, 330752), (64, 315248), (68, 296704), (76, 265472), (122, 165376), (128, 157624), (136, 148352), (152, 132736), (244, 82688), (256, 78812), (272, 74176), (304, 66368), (323, 62464), (488, 41344), (512, 39406), (544, 37088), (608, 33184), (646, 31232), (976, 20672), (1024, 19703), (1037, 19456), (1088, 18544), (1159, 17408), (1216, 16592), (1292, 15616), (1952, 10336), (2074, 9728), (2176, 9272), (2318, 8704), (2432, 8296), (2584, 7808), (3904, 5168), (4148, 4864), (4352, 4636)]