20878074

素因数分解:

$2^1\times 3^5\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2$

素因数の和:79

約数の個数: 144

約数和(自身を含む): 59911488

約数和(自身を除く): 39033414

約数列:

[1, 2, 3, 6, 7, 9, 14, 17, 18, 19, 21, 27, 34, 38, 42, 51, 54, 57, 63, 81, 102, 114, 119, 126, 133, 153, 162, 171, 189, 238, 243, 266, 306, 323, 342, 357, 361, 378, 399, 459, 486, 513, 567, 646, 714, 722, 798, 918, 969, 1026, 1071, 1083, 1134, 1197, 1377, 1539, 1701, 1938, 2142, 2166, 2261, 2394, 2527, 2754, 2907, 3078, 3213, 3249, 3402, 3591, 4131, 4522, 4617, 5054, 5814, 6137, 6426, 6498, 6783, 7182, 7581, 8262, 8721, 9234, 9639, 9747, 10773, 12274, 13566, 15162, 17442, 18411, 19278, 19494, 20349, 21546, 22743, 26163, 28917, 29241, 32319, 36822, 40698, 42959, 45486, 52326, 55233, 57834, 58482, 61047, 64638, 68229, 78489, 85918, 87723, 110466, 122094, 128877, 136458, 156978, 165699, 175446, 183141, 204687, 257754, 331398, 366282, 386631, 409374, 497097, 549423, 614061, 773262, 994194, 1098846, 1159893, 1228122, 1491291, 2319786, 2982582, 3479679, 6959358, 10439037, 20878074]

約数ペア:

[(1, 20878074), (2, 10439037), (3, 6959358), (6, 3479679), (7, 2982582), (9, 2319786), (14, 1491291), (17, 1228122), (18, 1159893), (19, 1098846), (21, 994194), (27, 773262), (34, 614061), (38, 549423), (42, 497097), (51, 409374), (54, 386631), (57, 366282), (63, 331398), (81, 257754), (102, 204687), (114, 183141), (119, 175446), (126, 165699), (133, 156978), (153, 136458), (162, 128877), (171, 122094), (189, 110466), (238, 87723), (243, 85918), (266, 78489), (306, 68229), (323, 64638), (342, 61047), (357, 58482), (361, 57834), (378, 55233), (399, 52326), (459, 45486), (486, 42959), (513, 40698), (567, 36822), (646, 32319), (714, 29241), (722, 28917), (798, 26163), (918, 22743), (969, 21546), (1026, 20349), (1071, 19494), (1083, 19278), (1134, 18411), (1197, 17442), (1377, 15162), (1539, 13566), (1701, 12274), (1938, 10773), (2142, 9747), (2166, 9639), (2261, 9234), (2394, 8721), (2527, 8262), (2754, 7581), (2907, 7182), (3078, 6783), (3213, 6498), (3249, 6426), (3402, 6137), (3591, 5814), (4131, 5054), (4522, 4617)]