20657181951

素因数分解:

$3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{601}}^1\times {\mathrm{6271}}^1$

素因数の和:6917

約数の個数: 64

約数和(自身を含む): 36247142400

約数和(自身を除く): 15589960449

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 87, 189, 203, 261, 601, 609, 783, 1803, 1827, 4207, 5409, 5481, 6271, 12621, 16227, 17429, 18813, 37863, 43897, 52287, 56439, 113589, 122003, 131691, 156861, 169317, 181859, 366009, 395073, 470583, 545577, 1098027, 1185219, 1273013, 1636731, 3294081, 3768871, 3819039, 4910193, 11306613, 11457117, 26382097, 33919839, 34371351, 79146291, 101759517, 109297259, 237438873, 327891777, 712316619, 765080813, 983675331, 2295242439, 2951025993, 6885727317, 20657181951]

約数ペア:

[(1, 20657181951), (3, 6885727317), (7, 2951025993), (9, 2295242439), (21, 983675331), (27, 765080813), (29, 712316619), (63, 327891777), (87, 237438873), (189, 109297259), (203, 101759517), (261, 79146291), (601, 34371351), (609, 33919839), (783, 26382097), (1803, 11457117), (1827, 11306613), (4207, 4910193), (5409, 3819039), (5481, 3768871), (6271, 3294081), (12621, 1636731), (16227, 1273013), (17429, 1185219), (18813, 1098027), (37863, 545577), (43897, 470583), (52287, 395073), (56439, 366009), (113589, 181859), (122003, 169317), (131691, 156861)]