20969676

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:240

約数の個数: 144

約数和(自身を含む): 67389504

約数和(自身を除く): 46419828

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 37, 39, 42, 52, 63, 74, 78, 84, 91, 111, 117, 126, 148, 156, 173, 182, 222, 234, 252, 259, 273, 333, 346, 364, 444, 468, 481, 518, 519, 546, 666, 692, 777, 819, 962, 1036, 1038, 1092, 1211, 1332, 1443, 1554, 1557, 1638, 1924, 2076, 2249, 2331, 2422, 2886, 3108, 3114, 3276, 3367, 3633, 4329, 4498, 4662, 4844, 5772, 6228, 6401, 6734, 6747, 7266, 8658, 8996, 9324, 10101, 10899, 12802, 13468, 13494, 14532, 15743, 17316, 19203, 20202, 20241, 21798, 25604, 26988, 30303, 31486, 38406, 40404, 40482, 43596, 44807, 47229, 57609, 60606, 62972, 76812, 80964, 83213, 89614, 94458, 115218, 121212, 134421, 141687, 166426, 179228, 188916, 230436, 249639, 268842, 283374, 332852, 403263, 499278, 537684, 566748, 582491, 748917, 806526, 998556, 1164982, 1497834, 1613052, 1747473, 2329964, 2995668, 3494946, 5242419, 6989892, 10484838, 20969676]

約数ペア:

[(1, 20969676), (2, 10484838), (3, 6989892), (4, 5242419), (6, 3494946), (7, 2995668), (9, 2329964), (12, 1747473), (13, 1613052), (14, 1497834), (18, 1164982), (21, 998556), (26, 806526), (28, 748917), (36, 582491), (37, 566748), (39, 537684), (42, 499278), (52, 403263), (63, 332852), (74, 283374), (78, 268842), (84, 249639), (91, 230436), (111, 188916), (117, 179228), (126, 166426), (148, 141687), (156, 134421), (173, 121212), (182, 115218), (222, 94458), (234, 89614), (252, 83213), (259, 80964), (273, 76812), (333, 62972), (346, 60606), (364, 57609), (444, 47229), (468, 44807), (481, 43596), (518, 40482), (519, 40404), (546, 38406), (666, 31486), (692, 30303), (777, 26988), (819, 25604), (962, 21798), (1036, 20241), (1038, 20202), (1092, 19203), (1211, 17316), (1332, 15743), (1443, 14532), (1554, 13494), (1557, 13468), (1638, 12802), (1924, 10899), (2076, 10101), (2249, 9324), (2331, 8996), (2422, 8658), (2886, 7266), (3108, 6747), (3114, 6734), (3276, 6401), (3367, 6228), (3633, 5772), (4329, 4844), (4498, 4662)]