20211287558

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{167}}^1\times {\mathrm{251}}^1$

素因数の和:570

約数の個数: 128

約数和(自身を含む): 39797194752

約数和(自身を除く): 19585907194

約数列:

[1, 2, 7, 11, 14, 22, 31, 62, 77, 101, 154, 167, 202, 217, 251, 334, 341, 434, 502, 682, 707, 1111, 1169, 1414, 1757, 1837, 2222, 2338, 2387, 2761, 3131, 3514, 3674, 4774, 5177, 5522, 6262, 7777, 7781, 10354, 12859, 15554, 15562, 16867, 19327, 21917, 25351, 25718, 33734, 34441, 36239, 38654, 41917, 43834, 50702, 54467, 56947, 68882, 72478, 83834, 85591, 108934, 113894, 118069, 171182, 177457, 185537, 236138, 241087, 278861, 293419, 354914, 371074, 398629, 461087, 482174, 522877, 557722, 586838, 599137, 785881, 797258, 922174, 1045754, 1198274, 1298759, 1299427, 1571762, 1952027, 2597518, 2598854, 3227609, 3660139, 3904054, 4233617, 5501167, 5751647, 6455218, 7320278, 8467234, 8644691, 9095989, 11002334, 11503294, 14293697, 17289382, 18191978, 28587394, 29635319, 40261529, 46569787, 59270638, 60512837, 80523058, 93139574, 100055879, 121025674, 131242127, 200111758, 262484254, 325988509, 651977018, 918694889, 1443663397, 1837389778, 2887326794, 10105643779, 20211287558]

約数ペア:

[(1, 20211287558), (2, 10105643779), (7, 2887326794), (11, 1837389778), (14, 1443663397), (22, 918694889), (31, 651977018), (62, 325988509), (77, 262484254), (101, 200111758), (154, 131242127), (167, 121025674), (202, 100055879), (217, 93139574), (251, 80523058), (334, 60512837), (341, 59270638), (434, 46569787), (502, 40261529), (682, 29635319), (707, 28587394), (1111, 18191978), (1169, 17289382), (1414, 14293697), (1757, 11503294), (1837, 11002334), (2222, 9095989), (2338, 8644691), (2387, 8467234), (2761, 7320278), (3131, 6455218), (3514, 5751647), (3674, 5501167), (4774, 4233617), (5177, 3904054), (5522, 3660139), (6262, 3227609), (7777, 2598854), (7781, 2597518), (10354, 1952027), (12859, 1571762), (15554, 1299427), (15562, 1298759), (16867, 1198274), (19327, 1045754), (21917, 922174), (25351, 797258), (25718, 785881), (33734, 599137), (34441, 586838), (36239, 557722), (38654, 522877), (41917, 482174), (43834, 461087), (50702, 398629), (54467, 371074), (56947, 354914), (68882, 293419), (72478, 278861), (83834, 241087), (85591, 236138), (108934, 185537), (113894, 177457), (118069, 171182)]