20899681408

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{8287}}^1$

素因数の和:8398

約数の個数: 128

約数和(自身を含む): 47171980800

約数和(自身を除く): 26272299392

約数列:

[1, 2, 4, 8, 16, 17, 19, 32, 34, 38, 61, 64, 68, 76, 122, 128, 136, 152, 244, 272, 304, 323, 488, 544, 608, 646, 976, 1037, 1088, 1159, 1216, 1292, 1952, 2074, 2176, 2318, 2432, 2584, 3904, 4148, 4636, 5168, 7808, 8287, 8296, 9272, 10336, 16574, 16592, 18544, 19703, 20672, 33148, 33184, 37088, 39406, 41344, 66296, 66368, 74176, 78812, 132592, 132736, 140879, 148352, 157453, 157624, 265184, 281758, 314906, 315248, 505507, 530368, 563516, 629812, 630496, 1011014, 1060736, 1127032, 1259624, 1260992, 2022028, 2254064, 2519248, 2521984, 2676701, 4044056, 4508128, 5038496, 5353402, 8088112, 8593619, 9016256, 9604633, 10076992, 10706804, 16176224, 17187238, 18032512, 19209266, 20153984, 21413608, 32352448, 34374476, 38418532, 42827216, 64704896, 68748952, 76837064, 85654432, 137497904, 153674128, 163278761, 171308864, 274995808, 307348256, 326557522, 342617728, 549991616, 614696512, 653115044, 1099983232, 1229393024, 1306230088, 2612460176, 5224920352, 10449840704, 20899681408]

約数ペア:

[(1, 20899681408), (2, 10449840704), (4, 5224920352), (8, 2612460176), (16, 1306230088), (17, 1229393024), (19, 1099983232), (32, 653115044), (34, 614696512), (38, 549991616), (61, 342617728), (64, 326557522), (68, 307348256), (76, 274995808), (122, 171308864), (128, 163278761), (136, 153674128), (152, 137497904), (244, 85654432), (272, 76837064), (304, 68748952), (323, 64704896), (488, 42827216), (544, 38418532), (608, 34374476), (646, 32352448), (976, 21413608), (1037, 20153984), (1088, 19209266), (1159, 18032512), (1216, 17187238), (1292, 16176224), (1952, 10706804), (2074, 10076992), (2176, 9604633), (2318, 9016256), (2432, 8593619), (2584, 8088112), (3904, 5353402), (4148, 5038496), (4636, 4508128), (5168, 4044056), (7808, 2676701), (8287, 2521984), (8296, 2519248), (9272, 2254064), (10336, 2022028), (16574, 1260992), (16592, 1259624), (18544, 1127032), (19703, 1060736), (20672, 1011014), (33148, 630496), (33184, 629812), (37088, 563516), (39406, 530368), (41344, 505507), (66296, 315248), (66368, 314906), (74176, 281758), (78812, 265184), (132592, 157624), (132736, 157453), (140879, 148352)]